如果你不利用，你将会失去它。演化经常带走一些功能而不是给予。穴居的鱼儿失去了眼睛，而寄生虫类如绦虫则没有了内脏。

If you don't use it, you tend to lose it. Evolution often takes away rather than adding. For instance, cave fish lose their eyes, while parasites like tapeworms lose their guts.

youdao

如果你不利用，你将会失去它。演化经常带走一些功能而不是给予。穴居的鱼儿失去了眼睛，而寄生虫类如绦虫则没有了内脏。

If you don't use it, you tend to lose it. Evolution often takes away rather than adding. For instance, cave fish lose their eyes, while parasites like tapeworms lose their guts.

youdao