He made every effort to smooth out his habitual worried look and wear a sunny smile, since a happy expression can lead to genuinely happy feelings.

他努力消除他惯常的忧虑神情，脸上挂着灿烂的笑容，因为快乐的表情会带来真正快乐的感觉。

youdao

Your blank expression, and the faraway look in your eyes are the cues that betray you inattentiveness.

你面无表情、眼神恍惚，这些都是你心不在焉的表现。

youdao

First, get all the matches with a regular expression that look pretty complex.

首先，获得所有与一看起来非常复杂的正则表达式匹配的结果。

youdao

The men show little expression. Rosa Parks' eyes look off to the side and into the distance.

VOA: special.2010.04.16

Right, having done that, we can certainly get to more complicated things, so for example, suppose I look at that expression.

好，说完了这一点，我们就可以讲些复杂些的话题了，例如，假设我看到了这个表达式。

麻省理工公开课 - 计算机科学及编程导论课程节选

When we see that, when we look on the web, we see that expression of both a hope for something better that the web seems to represent for them and we see that sense of furious anxiety about what school classroom actually means to these kids.

当我们认真看那些网站的时候，我们看到了这样一种表达,希望更好的生活,仿佛只有网络能够提供给他们,同时我们还看到了那种狂躁不安,困惑于到底学校的课堂对这些孩子们意味什么。

麻省理工公开课 - 媒体、教育、市场课程节选

However, on television, a blank or flat expression does not look blank.

FORBES: Smile For The Camera -Media Training

As she accepted the Intellectual Property Owner's Association 's 27th Annual Inventor of the Year award on June 28 for her work in tissue engineering--she is the first individual woman to win the award--her Donna Reed-style hair and her concerned expression made her look like a doctor about to apply a Band-Aid.

FORBES: Advanced Tissue Sciences Founder Wins Inventor Award

These stand-ins for the tomb's occupants look on without expression, hands clasped.

WSJ: Theater, Life, and the Afterlife | China Institute | A Dynasty Without the Hereafter? | By Lee Lawrence