点击下方单词,选择对的这个单词
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Placing an order-(下定单)
1. ahead of timein anticipation
e.g. when you pay ahead (or in advance) you receive a discountWe like to plan aheadshould have made reservations beforehand
Synonym: aheadbeforehand
多通过句子记忆单词,而不是单独死记硬背。