the upper atmosphere的用法和樣例:
例句
- Particle concentrations in the upper atmosphere drop regularly as the altitude rises.
在高層大氣中粒子濃度隨高度的增加而有規律地下降。 - As the final days ticked by, a dust storm on the planet erupted, reducing the density of the upper atmosphere.
在最后幾天的倒數計時(shí)中,火星上卻刮起了一場(chǎng)沙塵暴,導致高層大氣的密度降低。