专家说所有幸存的动物以及它们繁殖的后代都是野生的，为了避免它们的数量每年双倍的增加，这些动物都会被细致的管理控制宰杀。

Experts say all the surviving animals and their descendants are now wild, and to avoid the population doubling every year the animals are subject to a carefully managed cull.

youdao

专家说所有幸存的动物以及它们繁殖的后代都是野生的，为了避免它们的数量每年双倍的增加，这些动物都会被细致的管理控制宰杀。

Experts say all the surviving animals and their descendants are now wild, and to avoid the population doubling every year the animals are subject to a carefully managed cull.

youdao