| 释义 |
the upper atmosphere
基本例句
高层大气
Particle concentrations inthe upper atmospheredrop regularly as the altitude rises.在高层大气中粒子浓度随高度的增加而有规律地下降。
As the final days ticked by, a dust storm on the planet erupted, reducing the density ofthe upper atmosphere.在最后几天的倒数计时中，火星上却刮起了一场沙尘暴，导致高层大气的密度降低。 |