![粉色和白色甜甜圈橡胶圈](https://photo-cdn2.icons8.com/wd69VrsY_nbl1R-wVNMJe99nVGw4lsQ8Q15M2TbVNuM/rs:fit:288:192/czM6Ly9pY29uczgu/bW9vc2UtcHJvZC5h/c3NldHMvYXNzZXRz/L3NhdGEvb3JpZ2lu/YWwvMzY2LzMyOGJh/Njk5LWExNjQtNGE0/NS05YzdlLTNhNmM4/N2U2NGFjOC5qcGc.jpg)
粉色和白色甜甜圈橡胶圈
![粉色和白色甜甜圈橡胶圈](https://photo-cdn2.icons8.com/1mAWfuefJS9S-ENhnV7y1iFwORcG20b-ACT4l-E8nLM/rs:fit:288:192/czM6Ly9pY29uczgu/bW9vc2UtcHJvZC5h/c3NldHMvYXNzZXRz/L3NhdGEvb3JpZ2lu/YWwvOTIzLzI0ZDA4/NDExLTI2MDMtNDRh/Ny1iMjFlLTkzYmY4/MzdhNGQzZi5qcGc.jpg)
粉色和白色甜甜圈橡胶圈
![拍摄的垂直放置甜甜圈橡胶圈](https://photo-cdn2.icons8.com/-o0inkhrbJYcrIQoH_Ka-NYVDjSa1YIDjf3ErUoQPTE/rs:fit:288:432/czM6Ly9pY29uczgu/bW9vc2UtcHJvZC5h/c3NldHMvYXNzZXRz/L3NhdGEvb3JpZ2lu/YWwvMjMxL2U5NmYx/YjgyLWE5MDctNGEy/Ni1iMTAwLTcyNTBk/YmZhNzhiZi5qcGc.jpg)
拍摄的垂直放置甜甜圈橡胶圈
![拍摄的棕色和白色甜甜圈橡胶圈](https://photo-cdn2.icons8.com/M1VDcjdeNZnaHjpD67gNW60BvbR8mkgdFZmP5lDtrwo/rs:fit:288:192/czM6Ly9pY29uczgu/bW9vc2UtcHJvZC5h/c3NldHMvYXNzZXRz/L3NhdGEvb3JpZ2lu/YWwvNDcxLzE3YjJk/NjBkLWZkNzUtNDVm/Yy05YjA0LTIwMWY3/YTYwOWY4Zi5qcGc.jpg)
拍摄的棕色和白色甜甜圈橡胶圈
![拍摄的棕色和白色甜甜圈橡胶圈](https://photo-cdn2.icons8.com/svXWJI-YIXMvM3Cg0i-JMBbqVOA9Nh1HyJHQ6m_M9As/rs:fit:288:192/czM6Ly9pY29uczgu/bW9vc2UtcHJvZC5h/c3NldHMvYXNzZXRz/L3NhdGEvb3JpZ2lu/YWwvMTA3LzgzZDYx/YzY2LTYyOWEtNDEw/NS1iMTQxLTZhM2Qx/MTcyOWRhZS5qcGc.jpg)
拍摄的棕色和白色甜甜圈橡胶圈
![在白色背景互相安置的多福饼橡胶环](https://photo-cdn2.icons8.com/BlqFH0l1Zrywr0ckqb-GsoPVaEw64Cs4UyfS-DTCuxw/rs:fit:288:192/czM6Ly9pY29uczgu/bW9vc2UtcHJvZC5h/c3NldHMvYXNzZXRz/L3NhdGEvb3JpZ2lu/YWwvNjY3L2RhN2Fj/NDg4LWY2ZjctNDg4/ZS1hZTk3LTkxNzI3/ZGQyYTM4OS5qcGc.jpg)
在白色背景互相安置的多福饼橡胶环
![Flamingo rubber ring on white background](https://photo-cdn2.icons8.com/QlnqOfqx9OZMBngGDGDtTeHgjmwFnetquSH0YOmzRms/rs:fit:288:192/czM6Ly9pY29uczgu/bW9vc2UtcHJvZC5h/c3NldHMvYXNzZXRz/L3NhdGEvb3JpZ2lu/YWwvNzQxL2YzYzM5/ODhhLWFiZjktNGVk/ZC1iODk5LTk3OTU3/NDM1MzVkOS5qcGc.jpg)
Flamingo rubber ring on white background
![Flamingo rubber ring on white background](https://photo-cdn2.icons8.com/W8JDGSFaHrzRGoLEymMR4bn3yuR4LUp_32nzP5W4TBI/rs:fit:288:192/czM6Ly9pY29uczgu/bW9vc2UtcHJvZC5h/c3NldHMvYXNzZXRz/L3NhdGEvb3JpZ2lu/YWwvNzEwL2Q0NWMy/MTc5LWIyMDctNDQz/YS04YTkzLTM2MmZj/OWY1ODI1Mi5qcGc.jpg)
Flamingo rubber ring on white background
![Flamingo rubber ring photographed from the side](https://photo-cdn2.icons8.com/O_OC8YWzaIsyH29yoFe2pNJ13KYVwn1dnoESNnM9m8c/rs:fit:288:192/czM6Ly9pY29uczgu/bW9vc2UtcHJvZC5h/c3NldHMvYXNzZXRz/L3NhdGEvb3JpZ2lu/YWwvNTIzLzlkNTA0/YWYxLTg3NWEtNGUz/OC1iMTY5LTJlNGVi/MzQ5N2Q3Yi5qcGc.jpg)
Flamingo rubber ring photographed from the side
![在白色背景的两个火鸟橡胶环](https://photo-cdn2.icons8.com/Soz3mUfbFJ-DpElOUVNh8DznARtYCSYRnj16fR2JH3I/rs:fit:288:192/czM6Ly9pY29uczgu/bW9vc2UtcHJvZC5h/c3NldHMvYXNzZXRz/L3NhdGEvb3JpZ2lu/YWwvNjYzL2YzMWNh/MzhiLTc5MGYtNDFi/MC1hNGI2LWE2YjZj/MjA3NjQ0OS5qcGc.jpg)
在白色背景的两个火鸟橡胶环
![Flamingo rubber ring photographed from the side](https://photo-cdn2.icons8.com/JOBhM6uDuScWbkZX4n3aYGQdmJYdbbTO4kO2SQ0fyG0/rs:fit:288:192/czM6Ly9pY29uczgu/bW9vc2UtcHJvZC5h/c3NldHMvYXNzZXRz/L3NhdGEvb3JpZ2lu/YWwvOTEvNTNjYTA4/N2MtN2NlNC00NDIy/LWI1YTQtYTJkYjZi/YmUxY2FhLmpwZw.jpg)
Flamingo rubber ring photographed from the side
![在白色背景的桃红色和白色多福饼橡胶环](https://photo-cdn2.icons8.com/JiNYYxeTBz5R3tEXhhewSdj4eNawVASqwwX29WRc0_I/rs:fit:288:192/czM6Ly9pY29uczgu/bW9vc2UtcHJvZC5h/c3NldHMvYXNzZXRz/L3NhdGEvb3JpZ2lu/YWwvNzM1L2JkZmEy/OTVkLTlkMGMtNGY3/My04MjlkLTk0ODVj/ZTQyYTUxYy5qcGc.jpg)
在白色背景的桃红色和白色多福饼橡胶环
![在白色背景的多福饼橡胶环](https://photo-cdn2.icons8.com/VB0FkDM4Fn5fiqshrGNtftc9NLS4339ACab7vjNckCY/rs:fit:288:192/czM6Ly9pY29uczgu/bW9vc2UtcHJvZC5h/c3NldHMvYXNzZXRz/L3NhdGEvb3JpZ2lu/YWwvNzk1LzU1OTZj/M2Y1LTc3NzYtNDIx/Ny1iNTBmLWVjODlm/NzE0Y2M4OC5qcGc.jpg)
在白色背景的多福饼橡胶环
![在白色背景互相安置的多福饼橡胶环](https://photo-cdn2.icons8.com/HANJhof4u_mDysuJ_MkQ33ZYgm-X9IP7KCkfRpCoRSk/rs:fit:288:192/czM6Ly9pY29uczgu/bW9vc2UtcHJvZC5h/c3NldHMvYXNzZXRz/L3NhdGEvb3JpZ2lu/YWwvMzg3LzIwYTZk/NWViLTkwY2MtNDQz/Zi04OWVjLTNmNDE5/MjcxODBlNy5qcGc.jpg)
在白色背景互相安置的多福饼橡胶环
![女医生准备用注射器进行整形](https://photo-cdn2.icons8.com/4XPzV0ipkF15rMIt0YneksGTNUZs3-Y4NjZlpSDC5kc/rs:fit:288:432/czM6Ly9pY29uczgu/bW9vc2UtcHJvZC5h/c3NldHMvYXNzZXRz/L3NhdGEvb3JpZ2lu/YWwvNjYzLzVlY2Fh/MDE2LThlNTItNDZi/ZS1iYTc3LTk4Yzk0/ZmU3MTExYy5qcGc.jpg)
女医生准备用注射器进行整形
![女医生从病人的静脉取血](https://photo-cdn2.icons8.com/Au3cfp7ofE5rpdu27_vATyNr1ihMc5xmwvOl4QBBpMQ/rs:fit:288:192/czM6Ly9pY29uczgu/bW9vc2UtcHJvZC5h/c3NldHMvYXNzZXRz/L3NhdGEvb3JpZ2lu/YWwvNzI2Lzg0MGI0/ZmM2LTIxMzgtNDI1/ZC1iYWIyLWU5ZDk4/NTllMjIzOC5qcGc.jpg)
女医生从病人的静脉取血
![女医生从病人的静脉取血](https://photo-cdn2.icons8.com/OZiIkzMooyOIbhQe-wIC2V-MqzAR6Kql13vT1DKUsz8/rs:fit:288:192/czM6Ly9pY29uczgu/bW9vc2UtcHJvZC5h/c3NldHMvYXNzZXRz/L3NhdGEvb3JpZ2lu/YWwvNDIxL2ZiZTQy/MDY5LTY0MjYtNGZj/Mi05YmIxLWRkOGU3/ZmVkNDQ3YS5qcGc.jpg)
女医生从病人的静脉取血
![准备好要抽血进行分析的女医生](https://photo-cdn2.icons8.com/Ea7bd1zLaCFvMmoD14aMl_J6M8kka1dh6Pz9Up6Bz0I/rs:fit:288:192/czM6Ly9pY29uczgu/bW9vc2UtcHJvZC5h/c3NldHMvYXNzZXRz/L3NhdGEvb3JpZ2lu/YWwvMjMyLzRjYjMx/OGRkLTIzYTYtNGI0/Yi04MTdkLTI0MGVj/NDkzNTRkNy5qcGc.jpg)
准备好要抽血进行分析的女医生
![当医生让她注射时,老女人看着别处](https://photo-cdn2.icons8.com/uyMISPRcxGZUYCwme-mrPQNACn5HD8qr78LjduNKfhQ/rs:fit:288:192/czM6Ly9pY29uczgu/bW9vc2UtcHJvZC5h/c3NldHMvYXNzZXRz/L3NhdGEvb3JpZ2lu/YWwvNTk0LzBhOTJj/ZThhLTliOWMtNDgz/NC04Yjk0LTMzZmI1/ODIzMDUyZS5qcGc.jpg)
当医生让她注射时,老女人看着别处
![拿着体操橡胶圈的丰满笑女人](https://photo-cdn2.icons8.com/khWUSdZI1F83rAFsyF9kmOAYxTV11nAKikaQpW27eZQ/rs:fit:288:192/czM6Ly9pY29uczgu/bW9vc2UtcHJvZC5h/c3NldHMvYXNzZXRz/L3NhdGEvb3JpZ2lu/YWwvODAyLzFmZmQ0/Y2QyLWY1OWUtNDZk/YS04NTY4LWY3YmQ0/NjYyZGVmNi5qcGc.jpg)
拿着体操橡胶圈的丰满笑女人
![Abstract](https://photo-cdn2.icons8.com/nBBWiW_nnQLNUPkUFXRHt9d7_s5YRGTANCg-vTpE07c/rs:fit:288:216/czM6Ly9pY29uczgu/bW9vc2UtcHJvZC5l/eHRlcm5hbC9hMmE0/Mi8yNjAyZjc1ZDM4/OTM0NTRlYTI5Y2Uw/NzI0MjUzM2I4NS5q/cGc.jpg)
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Abstract