By observing their facial features carefully.

通过仔细观察他们的面部特征。

He was observing her every blink.

他注视着她眨巴时眼睛一开一闭的每一个变化。

He had stood in front of it, observing the intricacy of the ironwork with the wonder of a child.

他站在前面，带着孩子般的好奇，目不转睛地欣赏着精致的铁艺制品。

Through not observing what is in the mind of another a man has seldom been seen to be unhappy; but those who do not observe the movements of their own minds must of necessity be unhappy.

不要去注意别人心里在想什么，一个人就很少会被看成是不幸福的，而那些不注意他们自己内心的活动的人却必然是不幸的。

There is no real need to keep observing the same thing multiple times, and you will be very motivated to go back to the drawing board and redesign the site to eliminate the usability problems.

我们没必要老是观察重复的事情，而你也会用很强的动机回到画板前重新设计站点，以消除掉可用性方面的问题。

The idea was that it was impossible to know whether or not the cat was alive or dead without opening the box and observing it, and that until that happened, both realities existed.

中心思想是，除非打开盒子观察，不然就不可能知道猫的死活，而在打开之前，两种状况是共存的。

Thanks to Miriam for doing a paper on Child's growth development by observing Baby Candace , so we can find out the answer to the universal secret that Baby Candace can roll over.

感谢小姑以庆恩为观察对象做“儿童成长发展”研究报告，我们才有这机会解开宇宙大谜题，目睹庆恩翻转成功。

There is a lot of value in learning how to recognize whether the team is working well or not and one develops this recognition by observing how group members are interacting and participating.

学习如何认识团队是否运作良好，和通过观察组织成员是如何互动、参与有很大的价值。

Are they willing to stop observing the use of existing products and instead propose new scenarios and solutions that are meaningful for people, good for the environment, and profitable for businesses?

他们愿意停止观察现有产品的使用，转而提出新的，对人民有意义的，对环境有好的，并为企业带来盈利的图景和解决方案？

Attribute:Observing the creation of a story from the emptiness of a blank page is an essential step in the development of spatial cognition and is also a process which fascinates infants.

观察一个空白页故事的创作是孩子空间认知发展必不可缺的一步，也是使婴儿神魂颠倒的一个过程。