strained
adjective uk/streɪnd/ us/streɪnd/
（关系）紧张的，恶化的
If a relationship is strained, problems are spoiling it.
Relations between the two countries have become strained (= difficult) recently. 最近两国关系变得紧张起来。
紧张的，焦虑的，神色不安的
showing that someone is nervous or worried
She was looking strained and had dark circles beneath her eyes. 她显得焦虑不安，眼睛下面有了黑眼圈。
Jean felt uncomfortable but managed to force a strained smile. 琼觉得不舒服，但仍然勉强挤出了一丝笑容。