Packet switching system
[计] 包交换系统
🧩 词语组成解析
[计] 交换\\n[经] 转换, 调换, 调头
🗣️ 情景例句
To teach a fish how to swim.
孔子面前读诗书，班门弄斧。
What were you doing this time last year?
去年这时候你在干什么？
Almost any day a young porpoise may be seen trying to turn a 300-pound sea turtle over by sticking his snout under the edge of his shell and pushing up for dear life.
几乎每天都可以看到一只小海豚把鼻子顶入一只300磅重的海龟的硬壳下面，拼命地把它翻过来。