In addition of course, some of this framework also does a great job of protecting our insides - brain, lungs, heart, and digestive system - from damage from excessive outside forces.
当然除此之外,这个结构也有利于保护我们的内部器官,大脑、肺、心脏和消化系统——免受外部过大力量的损坏。
The momentum of the cluster as a whole would not change if there are no external forces on the system, 0 if the net sum, the total external force, is zero.
星云的动量,作为整体是不变的,若无外力作用于系统,如果外力总和为。
It is a system that can amplify either a human warming influence or a natural one, making the task of disentangling a signal of human influence from other forces exceedingly tough.
这是一个可以增强人类对全球变暖的或者自然的影响的系统,又是从其它因素中将人类的影响分离出的非常艰难的系统。
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