Co-phasal
[电] 同相
🧩 词语组成解析
[医] 钴(27号元素)
🗣️ 情景例句
Large or Little?
大杯还是小杯？
All our work was in vain.
我们白干了一场。
She works very hard and is very helpful.
她工作非常努力，对同学们帮助很大。