Altielectrograph
[气]高空电位计
🗣️ 情景例句
We must prepare ourselves to have a hard time.
我们必须准备过艰苦的日子。
My book has a dark blue cover.
我的书有一个深蓝色的封面。
One third of this area is covered with forest.
这一地区三分之一的地方都是森林。