Etatism
n. 国家社会主义
🗣️ 情景例句
Camping out is such great fun.
露营是件非常好玩的事。
No time like the present.
只争朝夕。
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。