Rain tree
雨树
🧩 词语组成解析
rain
[ren]
n. 雨;（热带地区的）雨季，雨天;雨点般降落的东西;<俚>电子流;
vt.& vi. （雨）降下，（使）降落;大量地给，（使）大量落下;
tree
[tri]
n. 树;木料;树状图;宗谱;
vt. 把…赶上树;使处于困境;把鞋型插入（鞋内）;
🗣️ 情景例句
What are you doing this weekend?
你本周末打算干什么？
We used to have a lot of interesting friends.
我们过去常有很多有趣的朋友。
and by measuring the time interval between the taps and the receipt of the echoes, the depth of the sea at that point can be calculated.
测出回声间隔的时间，便可算出该处海洋的深度。