The scientists said the area they researched formed the atmosphere in the lower clouds.

科学家们表示，他们研究的这片区域在较低云层中形成了大气层。

The scientists analysed the structure of airborne microbes in the lower clouds over the Southern Ocean.

科学家们分析了南大洋上空较低云层中空气微生物的结构。

" Bear southeast and keep climbing, there's some low cloud ahead we can lose ourselves in! " called Moody.

“向东南飞，继续上升，前面有一片低云，我们可以飞进去，隐藏在里面！”穆迪喊道。

Slender sheaves of cirrus clouds were followed on the horizon by layers of nimbocumulus. Other low clouds fled swiftly.

天际边一层层散开的卷云的后面，紧随团团乌云，还有一些低云飞快地掠过。

Looking out her window, she noticed the sky had become overcast. Low, rounded, oddly colored clouds were forming. It was still and oppressive.

从窗口望出去，她看到天空乌云密布，而且一团团颜色怪异的云正在低空形成，空气静止而且沈闷。

There were low clouds in the sky over the National Mall and the Capitol Building, the site of a major fireworks show.

一些重大的烟火秀场所，如国家广场和国会大厦都阴云密布。

Apparently, there were some low clouds in the area, but mostly it was just miscommunication between the pilots and the air traffic controllers.

显然，当时那个地区有一些低云，但主要还是因为飞行员和空中交通指挥员之间的沟通失误。

Visibility was bad due to low cloud.

【cloud】因为有低云，能见度很差。

A low cloud burned up from the heat.

一团低沉的云层从高温中燃烧起来。

" Fog" (fog) is basically a low cloud that makes it difficult to see.

“雾”（fog）基本上是一种低云，让人很难看清。

Then come long endless dark winters with gusty, icy winds and low heavy cloud.

然后是漫长的、无尽的黑暗冬天， 伴随着阵风、冰冷的风和低沉的厚云。

Will pointed to a low, gray cloud in the distance. " That's water? "

威尔指着远处一朵低矮的灰色云。 “那是水？”

The Hall was surrounded by heavy, low clouds, which opened now and then to show the grim, cold moor and its wet, grey rocks.

庄园被低沉的浓雾包围起来。它们时而散开，露出晦暗而又寒冷的沼地及其湿漉漉、灰蒙蒙的岩石。

A thousand live bats fluttered from the walls and ceiling while a thousand more swooped over the tables in low black clouds, making the candles in the pumpkins stutter.

一千只蝙蝠在墙壁和天花板上扑棱棱地飞翔，另外还有一千只像一团团低矮的乌云，在餐桌上方盘旋飞舞，使南瓜肚里的蜡烛火苗一阵阵扑闪。

The atmosphere was heavy; and the ladies expressed their fears of an approaching storm, as masses of low black clouds were gathering in the horizon.

气氛很沉重；女士们表达了她们对即将来临的暴风雨的恐惧， 因为大量低矮的乌云聚集在地平线上。

The following day was dull and foggy. The Hall was surrounded by heavy, low clouds, which opened now and then to show the grim, cold moor and its wet, grey rocks. The weather made us miserable.

次日阴晦多雾。庄园被低沉的浓雾包围起来。它们时而散开，露出晦暗而又，寒冷的沼地及其湿漉漉、灰蒙蒙的岩石。天气使得我们心情沉重。

The singer also mentions another famous characteristic or trait of San Francisco, and that is the " fog." Because it is by the ocean, there is often " fog" – basically, low clouds that make it difficult to see.

这位歌手还提到了旧金山的另一个著名特征或特质，那就是“雾” 。 因为它在海边， 所以经常有“雾”——基本上是低云， 很难看清。