"One skin cycle takes 30 days (for new cells to reach the top layer of skin), so in order to see a real difference in texture, tone, and clarity, you need to use it for more than a month," she says.

因为一次皮肤循环，也就是新细胞抵达皮肤表层的时间，需要30天左右，所以要想看到肤质、光泽度和清透度明显改观，应该坚持使用新品至少一个月。

youdao

One day, I noticed a lump on her skin.

有一天，我注意到她皮肤上有个肿块。

youdao

Any differences between them—one twin having younger looking skin, for example—must be due to environmental factors such as less time spent in the sun.

他们之间的任何差异（例如，双胞胎中有一个的皮肤看起来更年轻）一定是由于环境因素导致的，如在阳光下呆的时间更少。

youdao

America's National Cancer Institute reports that more than one million people in the United States developed skin cancer last year.

VOA: special.2010.07.06

This is one example of that: this is actually artificial skin.

举例来说,这是一张真正的人造皮肤

耶鲁公开课 - 生物医学工程探索课程节选

If I looked within the skin, one of the lower layers of your skin, the connective tissue layer, you'd find many fibroblasts there and they're just waiting in a more rounded shape than this, just waiting to do their job.

如果观察皮肤,更深处的一层细胞,结缔组织层,就能看到许多成纤维细胞,它们平时形状接近圆形,时刻准备着去完成自己的任务

耶鲁公开课 - 生物医学工程探索课程节选

Yet, as legend goes, there is more than one way to skin a cat.

FORBES: Magazine Article

Volunteers were asked to look away while a researcher put a bug on one of the skin patches.

ECONOMIST: Body hair

Bathing is important for removing germs from one's skin as well as washing away odors from sweat and dirt.

CNN: Is bathing just once a week healthy?