To bite off more than you can chew 自不量力
It is said that a total of 14 extant crocodile species have been recognised
今日小常识
Each crocodile has 24 teeth in its powerful jaws, which are constantly replaced throughout its life. However, these teeth are designed to grab and crush prey, rather than chew it. The reptiles swallow stones, which grind up food in their stomachs.
每条鳄鱼强大的下颚内都藏有24颗尖利的牙齿。这些牙齿在其整个生命中不断更换。鳄鱼用其牙齿来扑捉和粉碎猎物，而不是用它们咀嚼猎物。鳄鱼这种爬行动物往往会吞石下肚，以帮助磨碎胃中的食物。
今日短语
成语 bite off more than you can chew 的意思是你不能正确估量自己的能力，对自己估计太高或承担超过自己所能胜任的事情。
例句
I have bitten off more than I can chew by taking on this extra work – I don't think I'll get it finished on time.
David and Sarah planned to completely renovate their house by themselves. In the end, they bit off more than they could chew and had to pay builders to finish it.
Thanks for offering to babysit AND cook dinner for us, but don't bite off more than you can chew.
请注意
英语中的另一个同鳄鱼相关的短语是 crocodile tears 相当于汉语中的鳄鱼眼泪，恶人假慈悲。
例句
Louise is crying in the corner because she says the boss upset her – don't pay any attention to her, though – they're just crocodile tears.
