Eopaleozoic
始古生代的
🗣️ 情景例句
Don't get upset.
不要发怒。
No love is foul,nor prison fair.
没有肮脏的爱情，也没有美丽的监狱。
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。