Of course, in certain circumstances, a simple wave, nod or smile may be appropriate.
当然，在某些情况下，简单的挥手、点头或微笑可能都是合适的。
When you wave your arms up and down in a straight line，it means"yes"．
当你在一条直线上下挥动手臂时，它的意思是“是的”。
Designers, too, are trying to position themselves in front of the wave.
设计师们也在试图抢占这股浪潮的前沿。
Table 2: Essential activities in planning a single change initiative or wave of change.
表2：在变化的主动或者波动中设计一个单一的变化所要采取的重要活动
The change in speed passed like a wave, backwards through the traffic.
这种变速的行为就像一个波浪一样，在整个交通中一直向后推移。
In addition, high temperature, continuous wave operation of the laser has also been achieved.
此外，高温，连续波运行的设计目标也已达到。
Gravitational wave detectors are incredibly sensitive to the tiniest change in distance.
重力波探测器对距离上极微小的变化都非常敏感。
In the cinema business, however, the wave of liberalisation has been slow to arrive.
就电影界来说，自由化的浪潮迟迟未来。
She has a natural wave in her hair.
她的头发自然卷曲。
This is about a whole new wave in advertising displacement.
在“这是一波代替广告的全新浪潮，Groupon将能在更多的城市，跟更多的商家有更多的接触。”
Aircraft maneuvering can cause distortions in shock wave patterns.
飞机动作可以造成冲击波形态的扭曲。
Then came the real test, at one of the longest wave simulators in North America.
然后进行的是现场实验，就在北美最长的一个波浪模拟器里。
Slow wave — or deep wave leads to enhancements in both learning and physical performance.
慢波睡眠—也就是深度睡眠—能同时增强学习能力和体力。
Several African countries will be included in the first wave of implementation.
若干非洲国家将被纳入第一轮实施行动。
Orchard without precaution will suffer heavy loss in case cold wave occyrs.
如果寒潮发生，不采取预防措施的果园将会受到严重损失。
I'll be back in a moment, and if you need anything at all in the mean time, just wave at me!
我很快就会再过来，如果在这期间您有任何需要，向我挥挥手就行了！
In reality, everything is composed of oscillating wave packets of one type or another.
在现实中，一切都是振荡组成的波包的一种类型或另一种。
Indeed, the recent wave of EU enlargement has precious few defenders in Western Europe.
诚然，在西欧，支持最近一轮欧盟东扩者寥寥无几。
Wave to a kid in the car next to you.
向旁边车里的小孩打招呼。
You must live in the moment, in every wave, find your eternity in each moment.
你必须活在当下，乘着每一个波浪前行，在每一刻找到你的永恒。
Gesture: Wave forefinger in front of your nose.
手势：在鼻子前上下摇晃食指。
It is in a standing wave configuration.
是个驻波结构。
The wave of price is unavoidable in the world's market.
在世界市场上，价格的波动是不可避免的。
Extrapolating wave field is most important in the whole process.
在整个计算过程中，波场外推是最为重要的环节。
Move your arms in a wave like movement.
象波浪的运动那样移动你的胳膊。
Move your arms in a wave like movement.
象波浪的运动那样移动你的胳膊。
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