“闷的”的英语可以翻译为：frowsty ...

随后他开始讲话，洪亮的声音划破了窒闷的空气。Then he spoke, in a voice that pierced the thick air.从我自己身上,我所观察到的烦闷的根源有下列一些.In myself I could observe the following sources of tedium.那是十分愁闷的,十分忧郁.It had been dull and sombre enough....