An electric motor helps the operator pull a heavy load or go up a hill.

VOA: special.2009.05.11

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

I will say that the reading load is heavy.

我可以告诉你们，阅读量很大。

耶鲁公开课 - 1945年后的美国小说课程节选