strain名词形式

strain可以作为名词。

n.压力;重负;重压之下出现的问题(或担忧等);拉力;张力;应力;劳损;拉伤;扭伤

也可以作为动词。v.损伤;拉伤;扭伤;尽力;竭力;使劲;过度使用;使不堪承受

例句：

Relations with neighbouring countries are under strain at present.

目前，与邻国的关系正处于紧张状态。

She could hear the strains of Mozart through the window.

她能听见窗户里飘出的莫扎特的旋律。

You will learn to cope with the stresses and strains of public life.

你要学会怎样应付公众人物生活的紧张和辛劳。

Relations between the two families are strained.

两家关系紧张。

He burst to the surface, straining for air.

他冲出水面，使劲吸气。