那条狗龇牙咧嘴地低吼。

The dog bared its teeth and growled.

《牛津词典》

那条狗对陌生人龇牙咧嘴。

The dog bared its gums at the stranger.

youdao

狗对陌生人咧嘴露牙。

The dog grinned at the stranger.

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看到这么多狗突然同时出现，这只孤僻狗大吃一惊，它本能地退缩了一下，龇牙咧嘴，发出阵阵低沉的吼声。

Suddenly facing so many dogs at the same time, Lonely was startled. He shrank back instinctively, showed his teeth, and howled in a threatening low voice.

youdao

狗对陌生人咧嘴露牙。

The dog growled at the stranger.

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如果两只狗对着叫，龇牙咧嘴，互相颠扑，那只是一种表现，它们在试图摸底，谁更强大。

If two dogs bark, show their teeth, jump at each other, that is just a show, they are trying to feel the pulse, who is the stronger.

youdao

如果两只狗对着叫，龇牙咧嘴，互相颠扑，那只是一种表现，它们在试图摸底，谁更强大。

If two dogs bark, show their teeth, jump at each other, that is just a show, they are trying to feel the pulse, who is the stronger.

youdao