under a strain

• 处于紧张状态

under a strain的用法和样例：

例句

1. All her senses were on the strain when the test was going on.
   测试时，她所有的感官都处于紧张状态。
2. Relations with neighbouring countries are under strain at present.
   目前，与邻国的关系正处于紧张状态。