Billing system
[经] 开票制度, 收款制度
🧩 词语组成解析
billing
['biliŋ]
n. （节目单或戏院大门上的）演员表;（演员表上的）演员次序;开具账单;营业额;
🗣️ 情景例句
I'm not upset at all.
一点也不。
It only takes a few minutes.
只要几分钟而已。
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。