I'll have to beg off . I have another engagement.

恐怕我去不了了. 我另有个约会.

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We were invited to stay for dinner, but we had beg off.

他邀请我们吃晚饭, 他这麽做真是太客气了.

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I'll try to beg off for an hour.

我将设法请一小时的假.

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I'm afraid I am going to have to beg off from your dinner invitation.

我恐怕不得不请求原谅不能赴您的晚餐邀请了.

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Mother accepted an invitation to a dinner party, but a headache made her beg off.

母亲接受了赴宴的邀请, 但因头痛不能出席而请求谅解.

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