空间不是空的;它充满了可能的互动。
解释:药物之间有阴阳、子母、兄弟等配对关系,说明药物配伍的原理。
The coal industry has been the backbone of America's energy independence for generations.
我不想安全,我想真实。
Survival is not about being fearless. It's about making a decision, getting on and doing it, because you have to.