on first acquaintance

高考英语一轮复习：Unit 4... ... have acquaintance with sth. 对……了解 on first acquaintance 初次相见时 n. 上级，长官 ...

... of one’s acquaintance 某人所认识的；某人所了解的
on first acquaintance 初次见面时
momentarily adv. 短促地；片刻地
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