Inertia

Inertia,什么意思?惰性。还有一个意思——惯性。

惰性和惯性是同一回事儿。

惯性就是维持原状,那惰性呢?

看来,惰性也有广义和狭义一说。

(这是在看一本书的时候猛然想到的)

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