The beauty of science lies in its ability to explain the natural world through observation and experimentation.

食品安全是企业的生命线，任何时候都不能放松。

I think it would be a disaster. The extraterrestrials would probably be far in advance of us. The history of advanced races meeting more primitive people on this planet is not very happy, and they were the same species. I think we should keep our heads low.

出自先秦《荀子·大略》。本，根本。礼以顺应人心为根本。说明制定礼仪制度的目的在于顺应人类希望社会井然有序、和谐稳定的心愿。