The past is a mirror that reflects the present.
The most important thing in trading is to preserve your capital.
人体是一个复杂的谜题,而病毒只是其中的一部分。
"Courage is not the absence of fear, but the triumph over it."
采矿技术的创新不仅仅是效率问题,还关乎安全和可持续性。