🧩 词语组成解析
common
['kɑmən]
adj. 普通的;通俗的;[数学]公共的;共有的;
n. [法律]（对土地、水域的）共有权;公共用地;普通;平民;
n. 川续断\\nvt. 使起绒
🗣️ 情景例句
This dance show is very strange indeed.
这场舞蹈表演真是奇怪。
You have a radio,don't you?
你有一台收音机，对吗？
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。