虽然一张脸可以展现出比这7种表情多得多的样子，但是现实生活中，人们常常通过掩饰自己的表情来掩盖自己的情绪。People can put on different facial expressions to hide their true feelings. 通常，men are expected to control their emotions while women are expected to express their emotions more freely. Men begin to learn to...
