Reacton
[医] 反应单位
🗣️ 情景例句
Of course, I'll visit at least once a year, maybe more.
当然，我最少每年会来拜访一次，也许更多次。
Mary, this is Joe's brother David.
玛丽，这是乔的兄弟戴维。
Good morning, teacher.
老师早上好！