它们很小，可以轻易地溜进你的房子里，成群地生活，数量从几万到几十万，迅速繁殖。
They are small enough to easily slip inside your house, live in colonies that number in the tens of thousands to the hundreds of thousands, and reproduce quickly.
每个人都携带有几万这样的变异。
Every individual carries tens of thousands of these variations.
他表示，目前，超市正对好几万中商品进行春节促销。
Currently, tens of thousands of pieces of merchandise are part of the busy Chinese New Year seasonal promotion.
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