His expressions varied from poker-faced to blank.
他的表情在不露声色与茫然之间变幻不定。
Laughter is one of the most infectious expressions of emotion.
笑是最具感染力的感情表达方式之一。
These expressions are often used interchangeably, but they do have different meanings.
这些表达法经常可以互换使用，但它们的确有不同的含义。
We can use our eyes and facial expressions to communicate virtually every subtle nuance of emotion there is.
我们可以用眼睛和面部表情来如实地传达情感上的每一丝细微差别。
It makes their expressions more explicit.
这让他们的表达更加直白明确。
They showed threatening, pleasant and neutral expressions.
它们分别表现出了凶狠的、愉快的和不带感情色彩的表情。
What are the possible links between facial expressions and emotion?
面部表情和情绪之间可能存在哪些联系？
I can read Diana's thoughts from the changes in her facial expressions.
我能从戴安娜面部表情的变化看出她的想法。
Students should not worry about when exactly to use certain expressions.
学生不必担心什么时候使用某些特定的表达。
For the same reason, we all have similar emotional expressions like smiling and crying.
基于同样的原因，我们都拥有哭和笑这样类似的情感表达。
Until now, only humans and gorillas have the ability to exactly copy facial expressions.
直到现在，只有人类和大猩猩有能力准确地复制面部表情。
Some of the most popular expressions are those that are guaranteed not to offend anyone.
一些最流行的表达是那些保证不会得罪任何人的表达。
Any questions about going through these cycles and using expressions like this and so forth?
关于经历这些循环和用这样的表达有没有什么问题？
You don't have to work very hard to figure out what these different facial expressions mean.
你不必努力地学习，去弄清楚这些不同面部表情的含义。
Psychological researchers generally recognize that facial expressions reflect emotional states.
心理学研究人员通常认为面部表情反映了情绪状态。
Moreover, people in diverse cultures recognize the emotions manifested by the facial expressions.
此外，不同文化的人们都能从面部表情看出其中展现的情绪。
Most investigators concur that certain facial expressions suggest the same emotions in all people.
大多数研究人员一致认为，对所有人来说，一些特定的面部表情都表明同样的情绪。
Such things as facial expressions, body languages and eye contacts play important parts in giving a speech.
诸如面部表情、肢体语言和眼神交流等在演讲中发挥着重要作用。
European languages, when traced back to their earlier version, are very poor in number words and expressions.
追溯欧洲语言的早期版本，关于数字的词汇和表达非常贫乏。
The response contains language errors or expressions that largely obscure connections or meaning at key junctures.
响应中包含一些语言错误或表达方式，这些错误或表达方式在关键时刻严重掩盖了其联系或含义。
When dogs looked at the expressions of angry dogs, their eyes rested more on the mouth, perhaps to interpret the threatening expressions.
当狗狗看到愤怒的狗狗时，它们的眼睛更多地停留在嘴巴上，也许是为了分析那些威胁性的表情。
She spoke in a quiet voice but used remarkably coarse expressions.
她说话声音很轻，但使用了非常粗俗的言辞。
He tends to use a lot of slang expressions that I've never heard before.
他往往用许多我以前从未听说过的俚语。
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