当物体落向或被吸向黑洞里面时，物体将会获得动能，被加热，并且被一种定时涨落的力量压挤。
As the matter falls or is pulled towards the black hole, it gains kinetic energy, heats up and is squeezed by tidal forces.
北河定时涨落、多盐分的河水是这些居民的生命线，这条河被疏浚、被污染、被过度捕捞，还挤满了船。
The briny, tidal water of the Bei River, the residents' lifeblood, has been dredged and is polluted, overfished and crowded with ships.
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