Hydrooptics
水域光学
🗣️ 情景例句
Do you have family in New York?
在纽约有亲人吗？
By all means.
当然，一定。
Looking up I saw that we were surrounded by children in rags who were looking at us silently as we ate.
我抬头一看，发现我们被一群衣衫褴褛的小孩团团围住了，他们在默不作声地看着我们吃饭。