金属丰度是对恒星内除氢和氦之外元素的相对丰度的度量(天文学中比氦重的元素都叫金属。——译者注)。

Metallicity is a measure of the relative abundance in a star of elements other than hydrogen and helium.

youdao

我谨在此对我的合作伙伴们在这次峰会期间作出十分重要的承诺表示赞扬。

I want to commend my partners for the very important commitments that they made in conjunction with this summit.

youdao

但是，这些并非是对理解您的用户来说惟一重要的事项。

These aren't the only things that could be important to understand about your users, though.

youdao

So, imagine the pig has a heavy collar and to reward the pig for walking forward you might remove the heavy collar.

所以，想象这头猪带着很重的项圈,作为对这头猪向前走的奖励,你可以把项圈拿掉。

耶鲁公开课 - 心理学导论课程节选

In other words what happens to people's health as they lose weight and then regain it repeatedly over a period time?

换言之,在一段时期内反复增重减重,对人们的健康有什么影响

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

And what was known about alpha particles at the time is that they were these charged particles and that they were very heavy.

当时对alpha粒子的理解,是它们是带电的而且非常重，有谁知道的,比Rutherford时代的多吗。

麻省理工公开课 - 化学原理课程节选