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The(bird)canfly.
Thebutterfly
(butterflies)canfly.前面bird是单数.问后面butterfly是复数还是单
英语
Thebutterfly
,whichiscompetitiveswimming'sneweststroke(划水),wasdevelopedinthemid-1930s,butitwasn'tallowedintheOlympicsuntil1956.Thestory
英语
til 1956.The s
1
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