如果某人赤手空拳做成了某件事done something with their bare hands，那就是说他没有借助任何工具或武器就完成了这件事儿。
　　例句：
　　1. I didn’t have a fishing rod, so I caught the fish with my bare hands.
　　2. The policeman was shocked when he realised that the murderer had killed the victim with his bare hands.
　　请注意：另一个短语with one hand tied behind your back或with both hands tied behind your back意思是你轻而易举地做成了一件事。
　　1. Janette doesn’t find the work difficult. She can do most tasks with one hand tied behind her back.
　　常识补充：
　　Lizards are cold-blooded reptiles that emerged from water millions of years ago. Nowadays, they come in different shapes and sizes. Iguanas are a particular family of lizards which have evolved to cope with life in arid climates.
　　蜥蜴是冷血爬行动物，它们是几百万年前脱离水爬上陆地生活的。如今，它们有不同的形状和大小。鬣蜥是蜥蜴科中为应付干旱气候而进化成形的一种爬行动物。

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