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.

仅用一个周末就把房子粉刷完毕，真是件了不起的事。

Getting the house painted in just one weekend was quite a ___feat.

在他看来，全科获得A等成绩并非特别值得注意的成就。

To him, getting straight A's was not a particularly noteworthy ___feat.