Troposphere
n. 对流层\\n[医] 对流层
📖 牛津释义
troposphere
n[sing]
(usu 通常作 the troposphere) layer of the atmosphere that extends about seven miles upwards from the earth's surface 对流层（距地表约七英里）.
🗣️ 情景例句
Now let's head off for the city and the university club.
现在让我们进城去， 到大学俱乐部。
He has spent over six years working in Africa and India.
在非洲和印度工作了六年。
While he was eating, I asked him to lend me twenty pounds.
当他吃饭时，我提出向他借20英镑。