墨西哥钝口螈在墨西哥已经濒临灭绝，这是由于栖息地的减少和人类的捕杀。它们被当成是珍馐佳肴，就像是法国人喜欢吃的青蛙腿。
Ambystoma mexicanum is almost extinct in Mexico due to diminishing habitats and human hunting - they are regarded as a delicacy in much the way the French like frogs legs.
也许关于海胆，人们知道得最多的是它们的棘刺盔甲。但是，它们的口器可能更令人望而生畏——毫不夸张地说，海胆的牙齿可以把岩石咬碎，却永远不会变钝。
Sea urchins are perhaps best known for their armor of spines. But their mouths may be even more daunting-urchin teeth can literally chew through stone without getting dull.
在墙上钉几个磁性支架来存放刀具是个不错的方法，既方便取用，又能把刀具跟其他物品分开，免得磕磕碰碰地弄钝弄花了刀刃。
A magnetic holder screwed to the wall is a practical way of keeping knives always within reach and isolated from other objects that could dull and dent the blades by knocking against them.
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