1N-SING 平流层;同温层The stratosphere is the layer of the earth's atmosphere which lies between 10 and 50 kilometres above the earth. 平流层;同温层
2N-SING 最高层;最高水平;顶峰 If you say that someone or something climbs or is sent into the stratosphere, you mean that they reach a very high level. 最高层;最高水平;顶峰 [journalism]
This was enough to launch their careers into the stratosphere.
这足以让他们的事业平步青云了。
If oil supplies were ever disrupted, it would send U.S. oil-import bills into the stratosphere.