色多多在线观看播放-色多多在线观看高清免费-色多多在线观看视频-色多多在线看-欧美aaaaa性bbbbb小妇-欧美aaaav免费大片

The essence of science is not to complicate the simple, but to simplify the complex.

釋義：事物可能發生一次變化，而人則會經歷無數次變化。如果想要不再變化，除非已故命終。

What you do is infinitely more important than how you do it.

Transparency builds trust. Consumers have the right to know where their seafood comes from and how it’s produced.

礦工的頭盔不僅保護頭部——它還象征著辛勤工作的尊嚴。

變革在中間階段最為艱難。