仔细观察他们的伴侣是如何使用手势的。
约翰每天都观察他们。
研究人员向志愿者播放了一种钻机的声音，同时用机器观察他们的大脑活动。
Volunteers were played the sound of a drill while their brain activities were watched by a machine.
例如，去年我的学生花了一个星期的时间观察他们自己的购买行为，并对其进行了详细分析。
For example, last year my students spent a week looking at their own purchasing and analyzed it in detail.
在开始设计之前，建筑师在客户原来的房子待了一段时间，观察他们的生活，研究他们的习惯。
Prior to beginning his design, the architect spent some time in the client's old home, observing their life and studying their habits.
每当我第一次受邀去别人家，我都会仔细观察他们的书架。
Whenever I'm invited to somebody's house for the first time, I'll take a close look at their bookshelves.
作为父母、老师、阿姨、叔叔和朋友，我们的任务是倾听孩子内心的声音，帮助他们迈出第一步，观察他们能做的事情。
As parents, teachers, aunts, uncles, and friends, it's our job to listen for what speaks to a child's heart, help them take that first step, and watch what their little hands can do.
结果，他们的数学成绩在第一个学期末就超过了其他学生——在我们持续观察他们的两年中，两组学生之间的差距继续扩大。
As a result, their math grades overtook those of the other students by the end of the first semester—and the gap between the two groups continued to widen during the two years we followed them.
结果，他们的数学成绩在第一个学期末就超过了其他学生——在我们持续观察他们的两年中，两组学生之间的差距继续扩大。
As a result, their math grades overtook those of the other students by the end of the first semester — and the gap between the two groups continued to widen during the two years we followed them.
教学对象的问题迫使辅导别人学习的学生以不同的方式思考、解释材料，而观察他们解决问题的过程能让这些学生看到知识付诸到了实践中。
The agents' questions compel student tutors to think and explain the materials in different ways, and watching the agent solve problems allows them to see their knowledge put into action.
因此我热切地观察他们的作为。
不过这些顾客并不知道有人在观察他们。
但是从内部观察他们带来了一个新的视角。
But looking at them from the inside brings a surprising perspective.
观察他们，模仿他们。
观察他们的反应并等待一个回复。
我观察他们一整天了。
达尔文仔细观察他们的相貌和习惯。
你可以看这些人呢，观察他们身上发生了什么。
And you could look at these people and see what happens to them.
当我观察他们的时候，那些项目在我脑中闪现。
去观察他们的手势和举止行为，注意他的语调变化。
Observe his gestures and mannerisms. Observe his tone variations.
然而你不需要观察他们多久联系他们多久。
However you don't have to make the connection as long as you continue to observe what they do.
他和他的部下招募情侣们并观察他们进行的各种活动。
He and his staff bring in couples and observe them as they perform various tasks.
当一个人回答是或不是的时候，要仔细观察他们的眼睛。
If a person replies with a yes or no answer, watch their eyes carefully.
除此而外的，也是越来越重要的是观察他们的行为举止。
Another and increasingly important one is to see how they behave.
让他们上网，与站点交互，并观察他们的行为。
Get them to surf around, and interact with the sites, and watch them.
他们了解顾客，观察他们，再带上一些研究人员。
They go and glyphic the customer, observe the customer, bring some researchers with them.
观察他们的反应。
你真的不能通过观察他们得出他们的基因是如此不同的结论。
You really cannot tell by looking at them that they are so different genetically.
从孩子刚刚会打饱嗝时起，我们便开始观察他们的面部表情。
We start by learning what our babies' faces look like when they need to burp.
从孩子刚刚会打饱嗝时起，我们便开始观察他们的面部表情。
We start by learning what our babies' faces look like when they need to burp.
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