scarce

稀少的、缺乏的、不足的

Clean drinking water is becoming scarce in many regions.

在许多地区，干净的饮用水正变得越来越稀少。

罕见的、稀有的

Good teachers with that much patience are scarce.

这么有耐心的好老师实在罕见。

溜走、躲开、避不见面口语

He made himself scarce the moment the manager walked in.

经理一走进来，他就马上溜走了。