It is mainly made up of cross section worm gear _ spring _ slanting lumps _ ball.
它主要是由横截剖分蜗轮———弹簧———斜块———滚珠构成的.
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The service sector is made up of businesses like banks, hotels and restaurants.
第三产业都由像银行 、 酒店和餐馆等的工商企业组成的.
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Will took him up above the salt and made much of him. ( Ch. Kingsley , Westward Ho ! )
威尔 请他坐上席,很尊重他.
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My wife was woken up several times by the noise the baggage elevator made.
我妻子被运送行李的电梯发出的嘈杂声弄醒了几次.
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