Vitamin C is essential to building collagen, a vital component of young-looking skin, which starts breaking down in your twenties.

人类从二十几岁开始，主要保持皮肤年轻的胶原蛋白开始流失，而柑橘类水果含有构成胶原所必需的维生素C。

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Viner let me sit in on daily clinical rounds, scheduled that day for c., a young woman who had been at Yellowbrick for three months.

Viner让我出席了一次日常诊断过程，那一天是为一个叫C的人安排的，C是一个年轻女性，来Yellowbrik有三个月了。

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For young children who had never been on an airplane before, the C-5 seemed like a fearful prospect.

不过，对从没有见过飞机的孩子们来说，C-5似乎已经超出他们的预期了。

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Stuart Levy,a co-founder of Olive Branch D.C., a Washington-based interfaith group bringing together young professional Jews and Muslims.

VOA: standard.2009.10.19

"In 2009 we hosted 75 events around the country C Donor Dudes events C which is a program that we started on high school and college campuses, really to promote donation and encourage young people to share their decision and make sure they know the facts about donation."

VOA: standard.2010.02.26

Moorland Prison is 10 miles from the centre of Doncaster, and is a category C training prison with a capacity for 1, 006 inmates, including young offenders.

BBC: Moorland Prison criticised over handling of sex offenders

As a former top Republican staff member in the Senate and legal counsel to the New York Stock Exchange, she might have been expected to be sympathetic to the antiregulatory mood of both parties, but, once again, she found herself out of step, most notably when a young company known as Enron called on the C.

NEWYORKER: The Contrarian

If you're wondering what successful young entrepreneurs do for a second act, visit Tony C.

FORBES: Tadpoles