Laplander
n. 拉普兰人
✅ 同义词
🗣️ 情景例句
This job is no picnic.
这份工作很累人。
Do I look dirty?
我的样子很肮脏吗？
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。