登山者们希望在夜幕降临前到达山顶。

The climbers hope to reach the ___summit before nightfall.

例如，直升机滑雪——即用直升机将你带到山顶然后自己滑下来——正变得越来越流行。

For instance, heliboarding - that is, when a helicopter carries you to the ___summit of a mountain and you slide down on your own - is gaining popularity.

从山顶看到的景色绝对令人叹为观止。

The view from the ___summit was absolutely breathtaking.