The relationship of a couple is not necessarily as passionate and intense, but borne out of mutual respect and caring actually has the best chance of goingthedistance.
其实,夫妻关系并不一定要激情,不一定要浓得化不开,反而相互尊重和关怀才能让两人白头到老。
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So, when we think about a bond length, this is going to be the length of our bond here, that makes sense because it's going to want to be at that distance that minimizes the energy.