The thermos, with the lid on top, It's not a open system your coffee is going to stay warm or hot in the thermos.

顶部盖了盖子的热水瓶，不是开系,你希望你的咖啡在热水瓶里面保持温暖,或滚烫。

麻省理工公开课 - 热力学与动力学课程节选

I was neither at the hot gates Nor fought in the warm rain Nor knee deep in the salt marsh, heaving a cutlass, Bitten by flies, fought.

我未曾到过火热的城门,也未曾在暖雨中作战,更未曾在没膝的盐沼里挥舞弯刀，挨着飞蝇的叮咬，苦战。

耶鲁公开课 - 1945年后的美国小说课程节选