Animals tend to be active or inactive depending on the position of the sun or moon.

动物是否活跃取决于太阳或月亮的方位。

youdao

Learning has got to be active and experiential.

学习得是主动且来自经验的。

《柯林斯英汉双解大词典》

Mr.Smith always encourages his students to be active in class．

史密斯先生总是鼓励学生在课堂上要活跃。

youdao

"We're going to be active all over the United States; we have events across the country from Santa Monica to New York, to the heartland of the country."

VOA: special.2010.04.21

There is a huge difference between the energies in the outermost shell and the inner shells, which tells you that it's unlikely that any electrons except those in the outermost shell are going to be active.

最外层和最里层所具有的能量,有很大差异，而这告诉我们有一点是不太可能的,那就是除了最外层的电子,别的电子都是应该是活泼的。

麻省理工公开课 - 固态化学导论课程节选

If I'm going to be active in terms of managing my portfolio, should I spend my time and energy trying to beat the bond market?

如果我想主动地管理我的投资组合,是否应投入时间和精力,专注于战胜债券市场呢

耶鲁公开课 - 金融市场课程节选

" Lim himself promises: "I will continue to be active in the political scene.

CNN: Hishammuddin Tun Hussein

To be active in energy trading, Dynegy had to have enough electricity to sell.

FORBES: Power Broker

When it comes to social media, what does it mean to be active, anyway?

FORBES: Watch Out Facebook, With Google+ at #2 and YouTube at #3, Google, Inc. Could Catch Up