高水平: most normal

In fact, that is probably the most normal response.

事实上，这也许是最平常的反应。

Things soon returned to normal.

情况很快恢复了正常。

Her blood count was normal.

她的血球指数正常。

Her temperature is normal.

她的体温正常。

Air traffic had returned to normal.

空中交通已恢复正常。