And the other part about it is if feathers were twice as heavy, or half as strong, then birds couldn't fly."

VOA: special.2010.06.01

I don't have as heavy teaching loads, which makes it possible for me to write, as some colleagues at other schools where the teaching load is so heavy that it's very hard to get writing done.

教学任务不太重，这就使得我有时间进行写作，而另外一些大学,教学任务可能很重,那样的话，就没有时间去写作。

普林斯顿公开课 - 人性课程节选

Say, "No, I don't really want a dramatic, heavy performance."

所以你说，“不了，我不想看些那么戏剧化而沉重的表演。”

I feel like 课堂 - SpeakingMax英语口语达人

We're not going to get into that 'cause that takes us into heavy-duty music theory, but it's--if we don't have root position then we've got some other note of the triad in the bass, and we've got some kind of chord inversion, so that's what that particular term means up there.

我们就不深究这个问题了，这是一个冗长的音乐理论，但是如果没有了原位，三和弦的低音被另一个音所替代，这就是一种和弦转位，这就是这个词在这里的意思。

耶鲁公开课 - 聆听音乐课程节选

I think they're very heavy, indeed, but I don't know how much they weigh.

他们负重确实很多,但是我不知道他们的负重是多少

耶鲁公开课 - 古希腊历史简介课程节选