The interaction of molecules, intersection and synthesis of academic branches, and chemistry of complex systems are important subjects of chemical research in 21st century.

分子间的作用、学科间的交叉综合以及复杂体系的化学，是21世纪化学研究的重要方向。

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But soon those replicating molecules clothed themselves in a skin of fat, a membrane to keep their complex chemistry from diluting away.

但很快，这些复制分子将自己包裹在脂肪层之中，膜结构有助于防止复杂的化学物质被稀释。

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