rut

车辙, 常轨, 定例, 惯例

在...形成车辙

rut

1. a groove or furrow (especially one in soft earth caused by wheels)

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2. a settled and monotonous routine that is hard to escape; "they fell into a conversational rut"

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3. applies to nonhuman mammals: a state or period of heightened sexual arousal and activity

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1. be in a state of sexual excitement; of male mammals

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2. hollow out in the form of a furrow or groove; "furrow soil"

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