Pain is not just a sensation; it's a complex biological response that tells us something is wrong.
疼痛不仅仅是一种感觉;它是一种复杂的生物反应,告诉我们某些地方出了问题。
The first step in the art of cutting metals is to find a man who has the necessary skill and experience to do the work.
"The universe is a vast, interconnected web of information, and quantum mechanics is the key to unlocking its secrets."