feat

60岁学滑雪绝非易事！

Learning to ski at 60 ___is ___no ___mean ___feat!

埃菲尔铁塔是一项了不起的工程壮举。

The Eiffel Tower is a remarkable ___feat of engineering.

说服整个委员会绝非易事。

Convincing the entire committee ___is ___no ___mean ___feat.