Packet switching centre
[计] 包交换中心
🧩 词语组成解析
[计] 交换\\n[经] 转换, 调换, 调头
centre
['sentər]
n. 中心;（市镇的）中心区;中心点;中枢;
vt.& vi. 置于中央;集中;把…当作中心;（使）成为中心;
🗣️ 情景例句
You going to the baseball game today?
你今天要去看棒球赛吗？
My daughter was very pleased to do shopping.
我的女儿非常喜欢去购物。
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。