However, this power need not be provided from an emergency source.
如果发生…的情况，请不必着急。
The higher energy and power need more severe criteria to calorimeter.
更高的能量密度和功率密度对能量计提出了更苛刻的要求。
A bit of benevolence from people in power is not what we need.
来自当权者的一点点仁慈不是我们所需要的。
In both cases, we need a rebalancing of power.
在这两种情况下，我们都需要重新平衡权利分配。
You only need to press all the power buttons once.
你只需要一次性按下全部电源按钮。
Today there's a consensus that we need to build renewable power.
今天，人们一致认为我们需要建设可再生能源。
You have this power. You just need to learn how to exercise it.
你有这种能力，你只需要去学习如何运用它。
A: I think we need a power strip.
A：我想我们需要一个电源插排。
And we need extraordinary power for the task of local and world evangelization.
我们需要的任务非同寻常的力量当地和世界福。
These allow devices to receiveless power when they don't need it.
这些选项允许设备当不需要的时候接收少一点的电力。
我们也需要女性的力量嘛。
And you need to add some extra power to your squad as well if you want to remain and fight in every competition.
你需要为你的球队增添额外的动力，如果你想留下并获得上场机会。
All will need power, water and a way to get to work.
所有这些人都需要电，水，和去上班的交通工具。
The breakthrough here is that we do not need to use an electrical power source anymore to provide a little energy into the system.
这项技术的突破点是在这个系统中，不需要再额外施加任何电能。
Instead, make the decision on the basis of whether you need the power of ReentrantLock.
相反，应当根据您是否需要ReentrantLock的能力来作出选择。
That you posses the power and strength you need.
你有足够的能力和力量。
You pick how much computing power you need.
您可以选择需要多少计算能力。
In that case, we need to reclaim our power, and choose to stop agreeing.
这种情况下，我们需要唤醒我们的力量，选择阻止认同。
The worst time to power up your GPS is when you actually need it.
在你急需要用的时候才启动你的GPS其实是最坏的选择。
We need to move away from the binary choice of either power or environment.
我们需要跳出要么能源要么环境的二元对立选择。
Lasers also need chemical fuel or electrical power which is not readily available in space.
激光需要的化学燃料或者电力还没办法轻易安置在太空。
Designing transistors that need far less power is, it turns out, no easy task.
人们发现设计能源需求更小的晶体管不是个容易事。
需要更多能量？
Those pumps are heavy and need electrical power.
这些泵很笨重需要电力驱动。
Why do nuclear power plants need electricity to be cooled?
为什么核电站需要电力来冷却？
Why do nuclear power plants need electricity to be cooled?
为什么核电站需要电力来冷却？
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