Streambed
n. 河床
✅ 同义词
🗣️ 情景例句
Do I need a visa to go to HongKong?
去香港需要签证吗？
I'm not myself today.
我今天心神不安。
Work on it had begun before my sister left.
这栋房子在我姐姐离开之前就已动工了，