In the United States, the icy masses in Glacier National Park in Montana may soon completely disappear because of climate change.

VOA: special.2009.04.22

And they completely change once your first paper is due or the midterms arrive.

要写第一篇论文，时，情况彻底改变,或期中考试来临时。

哈佛公开课 - 幸福课课程节选

and then they just take what we did and completely change it.

但然后，他们就把我们的东西拿去，把它改得面目全非。

I can't help but 实战 - SpeakingMax英语口语达人

If you were to make that change you would find that the molecule now has completely different biological and chemical properties.

如果要做出这样的变化,你会发现,分子的生物形状,和化学性质完全改变了。

麻省理工公开课 - 化学原理课程节选

This completely could change if you were to flip from one to the other conformation which can happen in chemical reactions.

在化学反应中,它们的形状,可以从一种折叠成另外一种。

麻省理工公开课 - 化学原理课程节选