点击下方单词,选择对的这个单词
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1. the consequence of being lengthened in duration
Synonym: prolongationcontinuationprotraction
2. amount or degree or range to which something extends
e.g. the wire has an extension of 50 feet
Synonym: extensionprolongation
多通过句子记忆单词，而不是单独死记硬背。
