Astrognosy
恒星学
🗣️ 情景例句
Yes, I am.
是的，我是。
The children began to get across at each other.
孩子们开始争吵了。
We'll leave some evenings free,that is,if it is all right with you.
如果你们愿意的话，我们想留几个晚上供你们自由支配。