The researchers packaged the mRNA with a degradable polymer, to trick the mice's lung cells into accepting the package.

研究人员用降解聚合物包裹信使核糖核酸，诱使老鼠的肺细胞接受。

“By doing so, we could actually make the nanoparticles keep their functionality but make them degradable while also reducing the amount of the silver core in the nanoparticle system, ”

通过这法，我们既以让纳发挥功效，也以实现降解，与此同时减少纳颗中的银芯数量。

They did chop down forests and disposed of their trash in the rivers and oceans, but most of their  waste was degradable and ultimately not harmful to the environment.

他们确实砍伐了森林，并将垃圾丢弃在河流和海洋中，但他们的大部分垃圾都是降解的，最终不会对环境造成危害。