Ostiary
n. 看门人\\n[医] 口的
🗣️ 情景例句
You look great!
看起来很棒！
The lawyer must announce that you are the true inheritor of the family fortune.
律师必须公布你就是真正的遗产继承人。
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。