To understand why this is so requires a bit of knowledge about how colds work.

要理解其中的原因需要懂一点感冒发病的机理。

youdao

Tell me again how you work this machine; I'm still in a fog about it.

请再讲一遍这机器是怎么开的，我仍然如坠五里雾中。

youdao

Tell me again how you work this machine; I'm still in a fog about it.

请再讲一遍这机器是怎么开的，我仍然如坠五里雾中。

youdao