strained

1. ADJ If someone's appearance, voice, or behaviour is strained, they seem worried and nervous. 紧张的

She looked a little pale and strained. 她看上去面色有点儿苍白，神情紧张。

2. ADJ If relations between people are strained, those people do not like or trust each other. (关系) 紧张的

...a period of strained relations between the mayor and his deputy. …这位市长和他的副手关系紧张的一段时期。