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N-COUNT
馬
A horse is a large animal which people can ride. Some horses are used for pulling ploughs and carts.
例句
A small man on a grey horse had appeared.
一個騎著灰馬的小個子男人出現了。
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N-PLURAL
賽馬
When you talk about the horses, you mean horse races in which people bet money on the horse which they think will win.
例句
He still likes to bet on the horses.
他仍然喜歡賭馬。
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N-COUNT
（體操器械）跳馬
A vaulting horse is a tall piece of gymnastics equipment for jumping over.
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PHRASE
從知情人那里直接（獲悉）
If you hear something from the horse's mouth, you hear it from someone who knows that it is definitely true.
例句
He has got to hear it from the horse's mouth. Then he can make a judgment as to whether his policy is correct or not.
他必須得到千真萬確的信息才行。這樣他才能判斷自己的政策是否正確。