These stunts are designed to challenge the contestants both physically and mentally.

这些特技项目专为在体能和精神上,挑战参赛者而设计。

耶鲁公开课 - 公正课程节选

And yeah, it takes a long time to get good at it. A lot of fitness, too. A lot of working out.

要想划得熟练需要时间。体能也要好。再加上大量的锻炼。

MIT赛艇选手 - SpeakingMax英语口语达人

Well, then you could imagine a cycle here where activation of the receptor is leading to production of more ligand, is leading to activation of the receptor and production of a ligand.

那么,你就能画出一个循环图,激活受体能导致,更多配体的生成,这些配体又会刺激受体生成更多配体

耶鲁公开课 - 生物医学工程探索课程节选

Drinking and listening to the flute, at another time downing water and dieting, now practicing gymnastics and again idling and neglecting everything, and sometimes spending his time as though he were occupied with philosophizing.

小酌及聆听笛音，偶尔饮酒餤美食，有时锻炼体能,有时没事干,什么也不做，有时也花时间,进行哲思。

耶鲁公开课 - 政治哲学导论课程节选

Throughout all of this, they are subjected to a course of rigorous study and physical training that will lead them to adopt prominent positions in the military and other branches of public service.

这一进程，需要他们遵循,严格的学习及体能的训练,以便他们顺利接掌重要的军职,及其它公共服务事项。

耶鲁公开课 - 政治哲学导论课程节选