Law of commutation
[计] 交换律
🧩 词语组成解析
law
[lɔ:]
n. 法;法学;规律;法制;
vt.& vi. [口语、方言]诉诸法律，对…起诉，控告;
vt. 控告;对…起诉;
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
commutation
[[ˌkɔmju(:)'teiʃən]]
n. 交换, 变换, 代替\\n[电] 整流
🗣️ 情景例句
Look, simply shape up, or ship out!
看，只有表现好些才可留下来。
Make yourself necessary to someone.
使你有益于人。
But wouldn't you like to spend an extra day or two here?
你们不愿意在北京多待一天吗？