海鲜的可追溯性不仅关乎质量，更关乎责任。

The first duty of the sovereign， that of protecting the society from the violence and invasion of other independent societies， can be performed only by means of a military force.

The past is not dead, it is not even past.

如果你不尝试揭示看不见的东西并理解其本质，你将无法做好领导的准备。