在总经理面前，他们脸上的愉悦的表情既紧张又虚伪。
Facing up to the general director, all the cheerfulness on their faces is tense and artificial.
脸上永远挂着愉悦的表情，并送给每个我遇上的生物一个微笑。
To wear a cheerful expression at all times and give a smile to every living creature I meet.
待到达山脚后，大家都显得十分疲倦，不过脸上洋溢着愉悦的表情。
When reached the foot of the mountain everybody looked very tired , but content with a great day behind them.
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