Dogs may indeed be able to distinguish between happy and angry human faces, according to a new study.

根据一项新的研究，狗也许确实能够分辨人类高兴和生气的脸。

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Keep the countenance of interpretation, happy and angry do not show in the face. A person calm and conservation, the feelings are not exposed.

喜怒不形于色〖解释〗高兴和恼怒都不表现在脸色上。指人沉着而有涵养，感情不外露。

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The team showed 13 Western Caucasians and 13 East Asians a set of standardised images depicting the seven main facial EXPRESSIONS: happy, sad, neutral, angry, disgusted, fearful and surprised.

研究小组向13名西方白种人和13名东亚人展示了七张脸部表情标准图：包括高兴、悲伤、无表情、愤怒、厌恶、恐惧和惊讶。

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Instead of being happy all the time - I would be quite moody, angry, and I would have arguments.

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They then built a lightweight piece of software which allows users to input any text and then adjust to have it spoken in various moods, from happy to frightened to angry.

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