刀部就汉字索引来说，是为部首之一。
我要下降时，就用一把刀捅破一些气球，或者割掉绳子放飞它们。要上升时，就扔掉一部分用来压重的水。
I descended by popping balloons with a knife or cutting them free, and climbed by throwing off some of my ballast water.
该呼吁是今天在《柳叶刀》杂志上发表的全球精神卫生六份评论系列的一部分。
The appeal is part of a series of six reviews on global mental health which is being published today in the journal the Lancet.
工资的一部分取决于工人在一小时内加工鱼的数量，最快的工人用四刀就能解决一条鱼。
With their pay partially determined by the number of fish they can process in an hour, the best workers can do this with just four cuts of the knife.
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