Answer: There is no connect statement in spcat, as it assumes the implicit connection to the database.
解答:在spcat中没有connect语句,它假设连接数据库是隐式的。
If you connect the body to a spring, which is neither compressed nor extended, there's no force acting on it.
如果将一个弹簧连在这个物体上,弹簧既没有被压缩也没有被拉伸,也不会有力作用在它上面
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