Pentacta
五角参属
🗣️ 情景例句
Tom, would you give Mr. Johnson Tom
拿给Johnson先生
In life, as in chess, forethought wins.
人生如下棋，多谋得胜利。
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。