单词	zipper
释义	zipperzipper /ˈzɪpɚ/ ●●● S3 noun [countable] an object with two lines of small metal or plastic pieces that slide together to fasten a piece of clothing, a bag, etc.
随便看	relative age relative atomic mass relative clause relative dating relative density relative humidity relatively relative motion relative pronoun relative time relativism relativist relativity relaunch relax relaxant relaxation relaxed relaxing relay relay race release relegate relegation relent

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