The lithium-ion battery is something that has impacted the world in a very big way.
健康的动物是健康食品链的基础。
Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
I find I'm so excited. I can barely sit still or think about it. I think only those who have a long way to go on a journey to regain their freedom will feel the excitement of the upcoming mystery. I hope to cross the border and shake hands with my friends. I hope the Pacific is as blue as a dream. I hope。