你的面部表情应当自然地与信息相配合地作出相应改变，说到严肃的问题时要有更严肃的表情，与听众谈判兴趣时则要保持机敏、友好的表情。
Present somber news with a more serious expression. To communicate interest in your listeners, keep your expression alert and friendly.
面部表情要令人愉快，不过在严肃的场合，表情要庄重。
Let your countenance be pleasant but in serious matters somewhat grave.
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