今天下午，我用一根细线自己拔了一颗牙，很勇敢！

cup [kʌp] 杯子;一杯(的量)
glass [ɡlɑːs] 玻璃;玻璃杯;一杯(的量)
glasses [ˈɡlɑːsɪz] glass复数;眼镜
bottle [ˈbɒtl] 瓶子;一瓶(的量)
wine [waɪn] 葡萄酒

a cup of water
a cup of tea
a glass of milk
a bottle of milk
a bottle of wine

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