O colony
[医] O菌落(不动型菌落)
🧩 词语组成解析
🗣️ 情景例句
We think it might be just right for ten- to twelve-year-olds.
我们想它或许对十岁到十二岁大的孩子正合适。
How long does it take for a letter to get to California ?
一封信到加利福尼亚要花多长时间？
That's a great idea!
好主意！