untenable

形容词

1. 1

   站不住脚的、难以辩护的、说不通的

   His argument became untenable once the new data appeared.

   新数据一出现，他的论点就站不住脚了。

2. 2

   难以维持的、无法持续的

   The manager resigned after his position became untenable.

   在处境变得难以维持后，那位经理辞职了。

3. 3

   难以防守的、守不住的军事

   The troops withdrew from an untenable hilltop outpost.

   部队撤离了那个难以防守的山顶哨站。