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crowntree, crown-tree, crownwheel, crownwork, crowquill, crow-quill, crow's-bill, crow's-feet, crowsfoot, crow's-foot,

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积存, 积肥, 积分, 积分变换控制工程, 积分的, 积分检验法, 积分器, 积分仪, 积分因子, 积垢,