To be engaging with your audience you have to be free to walk among them if you can, or at least vary your position on stage, so that you will appear to be approachable to everyone in the room.
要想与观众营造融洽的氛围，你可以走到观众中间与观众互动，最起码你得经常更换你在讲台上的位置。这样观众才会觉得你平易近人。
Compared with Chinese Language, the substantive modifiers and the restrictive attributes in English vary in position and order as the result of different culture and tradition.
英汉语言由于文化传统不同，名词性修饰成分和形容词性限定成分的位置及语序存有差异。
Meanwhile, the negative influence will vary along with the time, test position and test use.
同时，这种负面影响会随着时间、考试地位和测试用途的改变而转变。
Experimental and computational techniques reveal that the flow field within the device is not uniform, and dissolution results can vary dramatically with the position of the tablet within the vessel.
实验和计算结果也表明仪器内的流动也并不均匀，溶出结果也因片剂在容器中的位置而变化很大。
Experimental and computational techniques reveal that the flow field within the device is not uniform, and dissolution results can vary dramatically with the position of the tablet within the vessel.
实验和计算结果也表明仪器内的流动也并不均匀，溶出结果也因片剂在容器中的位置而变化很大。
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