水手们正在清洗船体露出水面的部分。

The sailors are cleaning the ___topsides of the ship.

机务人员正在检查飞机顶部的表面是否有损伤。

The mechanics are inspecting the ___topsides of the aircraft for any damage.

我们在攀爬时需要小心翻越这块巨石的顶面。

We need to carefully traverse the ___topsides of this boulder while climbing.