短语
中文翻译：进入繁殖期
同义词：
['estrus', 'breeding season']
例句：
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1.The cows are coming in heat, and the farmer needs to check their condition.
奶牛正在进入繁殖期，农民需要检查它们的健康状况。
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2. The dog is coming in heat, and we need to keep an eye on it.
狗正在进入繁殖期，我们需要密切关注它。
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3. The horses are coming in heat, and the trainer needs to monitor their behavior.
马匹正在进入繁殖期，训练师需要监控它们的行为。