在许多欧洲国家，近年来随着柴油车日益普遍，这一数字达到了好几万人。
In many European countries, where diesel vehicles have become more common in recent years, that number reaches tens of thousands.
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.
应用推荐