英语语法分析

When mosquitoes fly, their wing would produce continuous wingbeat sounds.

蚊虫飞翔时，翅上下拍打会形成连续的翅振音。

No one knows, but the legend says that you will be able to hear a butterfly's wingbeat.

没人知道，但传说你将能听到蝴蝶飞翔的声音。