Stratospheroid
平流层气球
🗣️ 情景例句
Are all the answers here to your satisfaction?
这里所有的答复都令您满意吗？
There are many training classed and night classes.
有许多培训班与夜校。
The six students put their closed hands in front of them.
6个学生将握紧的手放在前面。