Whether he is happy or angry, his emotions are clearly shown on his face.

不论是开心还是生气，情绪都展现在脸上。

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The scientists repeatedly showed 20 dogs half pictures - either the lower mouth region or the upper eye area - of happy or angry human faces.

科学家反复向20只狗展示半张人类的笑脸或怒容图片——要么是只有嘴的下半部分，要么是只有眼睛的上半部分。

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Later that night I saw him briefly as he came down for supper. He did not appear to be one thing or the other, happy or angry, unconcerned or anxious.

那天晚上他下楼用餐的时候，我看了他一眼，他并没有表现出特别的情绪，没有高兴也没有生气，不冷漠也不焦虑。

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Heading into this weekend, are you in a happy or angry mood?

FORBES: Reasons To Feel Happy--And Angry

It seemed to gauge the kinds of thoughts he was having whether they were angry or happy, or if he was hiding something.

NEWYORKER: The Apostate

For instance, it asks you to slide a button along the bottom of a birthday cake to determine your age, or to rate your pain on a scale of happy green to angry red.

CNN: Forms at the doctor's office just got fun