It is as easy as falling off a log.

这跟从圆木上滚下来一样容易。

youdao

In fact, it would be as easy as "falling off a log."

实际，这就是像从圆木上滚落下来一样容易。

youdao

For example, you might hear a student say to her friend that her spelling test was "as easy as falling off a log."

VOA: special.2009.06.07

"As easy as falling off a log" is one such expression.

VOA: special.2009.06.07

And their meaning is as easy to understand as "falling off a log."

VOA: special.2009.06.07

Selling them, the company hopes, will be as easy as falling off a log.

ECONOMIST: Chopping wood