英语:by around eight o'clock是否等于at about eight o'clock?英语:by around eight o'clock是否等于at about eight o'clock?

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英语:by around eight o'clock是否等于at about eight o'clock?英语:by around eight o'clock是否等于at about eight o'clock?
英语:by around eight o'clock是否等于at about eight o'clock?
英语:by around eight o'clock是否等于at about eight o'clock?

英语:by around eight o'clock是否等于at about eight o'clock?英语:by around eight o'clock是否等于at about eight o'clock?
不一样,about与around一样,但by是指截止某时间之前,用完成时,at指在几点,用一般时

看语境吧,但是单从两个短语来看,意思都是一样的,都是8点左右。