Valid prefix
[计] 有效前缀
🧩 词语组成解析
prefix
['pri:fiks]
n. <语>前缀;人名前的称谓;前置代号（置于前面的单词或字母、数字）;
🗣️ 情景例句
Nice weather today, isn't it?
天气不错，是吧？
You're wasting you breath.
你在白费口舌。
For them this is a major operation which involves considerable planning.
看戏在他们是件大事，需要精心计划。