1.break down 分解

The analysis shows that plastics, particularly those that break down fast, are contributing to the climate change.

分析表明，塑料正在导致气候变化，尤其是那些快速分解的塑料TQ=Tktf^VsgBSZg。

2.convert into 把……转化成

Once made, HMF is fairly easy to convert into plastics or diesel fuel.

一旦制成羟甲基糠醛后，进一步将其转化成塑料或柴油燃料就会相当容易5xzk)=uE-%Ai9CY!9。

3.account for 占

The social services account for a substantial part of public spending.

社会服务性事业占政府开支的相当大的一部分Bt4RfZ.vgSaxqf^~z。

4.tricky 棘手的

It was a tricky problem but I think we've licked it.

这是一个棘手的问题，但我认为我们轻而易举地把它解决了V%eQPO)X8NFgn|JrN。