differ r by 相差多少
If you want all the potentials they differ by this constant. OK.
对于所有的位势，它们随常数的不同而不同。
youdao
Other priorities will differ by country.
其他的重点根据国家不同而异。
Productivity between individuals in the same development team can differ by orders of magnitude.
同一个开发团队中不同个体之间的生产力可以相差许多个数量级。
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