be on the strain

• adj. 在紧张

be on the strain的用法和样例：

例句

用作形容词 (adj.)

1. It is difficult to be natural when one is tense.
   人在紧张的时候很难泰然自若。
2. Most of them who were waiting were pulling nervously on cigarettes.
   等候的大部分人都在紧张地抽着烟。