1.
A rain cloud, especially a low dark layer of clouds such as a nimbostratus.
雨云雨云，尤指象雨层云一样的深色低云层
2.
The lightning is the current from the cloud layer to the cloud layer or from the cloud layer to ground.
闪电是从云层到云层或从云层到地面的电流。
3.
There was heavy cloud and a lowering cloud base.
阴云密布，而且云层愈来愈低。
4.
The clouds are lying over the hills.
云层笼罩在群山顶上。
5.
The clouds above began to get thicker.
上空的云层越来越厚。
6.
visual flight rule between layers
云层间目视飞行规则
7.
The plane climb until it be clear of the clouds
飞机爬升穿出了云层
8.
The plane climbed until it was clear of the clouds.
飞机爬升穿出了云层.
9.
The plane climb until it is clear of the clouds.
飞机爬升穿出了云层。
10.
drops of fresh water that fall as precipitation from clouds.
从云层降下的淡水水滴。
11.
The clouds parted and the sun shone.
云层散开,太阳照耀着。
12.
spaceborne infrared cloud mapper
空载红外云层测绘仪
13.
There was ten tenths cloud at that time.
当时云层厚度是十度。
14.
clouds rather thin and broken
云层颇为稀薄及疏松
15.
A ray of sunlight pierced the clouds.
一缕阳光穿透了云层。
16.
The high mountain passes the cloud layer to tower aloft.
高山穿过云层耸立着。
17.
The plane nosed down out of the overcast.
飞机向下飞出了云层。
18.
The moon drifter from behind the clouds
月亮从云层后浮现出来。