The past is a foreign country; they do things differently there.
永远不要让任何人掩盖你的光芒。
如果物体处于静止状态或作匀速直线运动,只要没有外力作用,物体将保持静止状态或匀速直线运动状态。
世界上任何书籍都不能带给你好运,但它们能让你悄悄成为你自己。
The key to a successful database system is its ability to evolve with the changing needs of its users.