One New Caledonian crow, called Betty, bent some straight wire into a hook and used it to lift a small bucket of her favourite food from a vertical pipe.
一只名叫贝蒂的新喀里多尼亚乌鸦把一根笔直的铁丝咬成一个弯钩,用它把一小桶她最喜欢吃的食物从一根垂直的管子里吊了出来。
He tried to catch one of the rafts with a boat-hook, but missed.
他试图用船钩钩住一根木筏,但没钩住。
During an autopsy, one dead caiman was found to have a large fishing hook in its stomach.
某次尸检发现,一头死亡的凯门鳄的胃里发现一把大鱼钩。
No one gets off the hook on this one -- from governments to schools, corporations to nonprofits, all the way down to families sitting around their dinner table."
VOA: special.2010.06.07
You hook one end of the spring to a wall and you pull it from rest by some amount and you attach the one kilogram mass to it.
你把弹簧的一端固定在墙上,然后拉伸一段距离,接着你把 1 千克物体固定在上面
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