对生理节律的研究，发现了人体生物钟上一个不曾预料到的新分子齿轮。

Research into circadian rhythms has led to the discovery of a new and unanticipated molecular cog in the human body clock.

youdao

表的每一部分都是由他亲手制作，没有使用任何外来的零件——螺钉、弹簧、杠杆、托盘和齿轮、指针以及简洁但是有无数刻度的钟面。

He made the screws, the springs and the levers, the pallets and gears, the hands and the plain, often numberless dials.

youdao

这个表达出自于机器或者齿轮会由于齿轮的改变而改变速度的原理。以上就是英语一分钟的内容。

This expression is based on the idea that a machine or vehicle will change speed when you change the gears. And that's English in a minute.

youdao