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。
激发生命,让生命自由发展,这是教育者的首要任务。
我不后悔我做的任何事情。
Every challenge in energy production is an opportunity to innovate and improve.
Without forgetting it is quite impossible to live at all.
The improvement of understanding is for two ends: first, our own increase of knowledge; secondly, to enable us to deliver that knowledge to others.