莫蒂默教授身子向后靠并咧开嘴笑。
他咧开嘴笑，露出了全部牙齿。
她高兴地咧开嘴笑。
例如，为了表达喜悦，机器人会将手举过头顶，并且睁大眼睛咧开嘴笑。
To express delight, for example, the robot put its hands over its head and opens its mouth and eyes wide.
她把含苞欲放的青色花骨朵儿变成了一朵朵粉红粉红正在对着我们咧开嘴笑的桃花；
She put the pink bud cyan others into pieces are on our open mouth laugh in the peach blossom;
相反，他咧开嘴笑，并且用一种让旁人侧目的尖嗓子说话，“不要觉得抱歉，先生，今天没有任何事会惹恼我。
On the contrary , his face split into a wide smile and he said in a squeaky voice that made passersby stare, "Don't be sorry, my dear sir, for nothing could upset me today!"
因此，你的狗狗咧开嘴笑也许并不是人类式的微笑。但这似乎是出于大脑深层的部分。这一部分动物和人类是一样的，由于高兴而笑。
So your dog's grin may not be a real human-type smile. But it now seems likely that deep in brain regions that animals share with humans, the ability for joy and ancients forms of laughter do exist.
因此，你的狗狗咧开嘴笑也许并不是人类式的微笑。但这似乎是出于大脑深层的部分。这一部分动物和人类是一样的，由于高兴而笑。
So your dog's grin may not be a real human-type smile. But it now seems likely that deep in brain regions that animals share with humans, the ability for joy and ancients forms of laughter do exist.
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