Oh, please. The heart's a tough muscle. 哦 别 心肌很强壮的
The human flesh is a tough shell. Dig in. 人的肌肉很坚硬 切下去
is how I'm not tough enough, how I squirm at the sight of blood... 我不够强悍啦,见到血是多么懦弱啦
Small but tough animals that lived alongside woolly mammoths. 是一种健壮的小型动物 曾与猛犸象生活在同一个时代
Predators with permanent territories must tough it out, 定居于此的捕食者只能选择熬过去