So in this saliva, we found two enzymes that can reproduce the effect of the saliva, meaning oxidising polyethylene.

在这些唾液中，我们发现了两种酶可以复制唾液的效果，也就氧化聚乙烯。

He was a man of fifty, a sort of sea–wolf, with big eyes, a complexion of oxidised copper, red hair and thick neck, and a growling voice.

这人有五十，久经海上风波的老水手，说话挺冲，看样子不大交往的人。他圆睁着两只大眼睛，面如青铜，头发棕红，梧，一点也不象人们在社会上经常接触到的人。

It's not difficult, it's just a bit fiddly, there are things to watch for, it oxidises very quickly, so as you're prepping it, rubbing it with lemon is wise.

这并不难，只有点繁琐，有些地方需要注意，它氧化得很快，所以在准备的时候，用柠檬摩擦它就很明智。

When zinc is exposed to the acid in the lemon juice, the acid oxidises, or removes electrons from the zinc, and the resulting positively charged zinc ions move in the solution.

当锌暴露于柠檬汁的酸的时候，酸就会氧化，或者把锌里面的电子移除，所以带正电荷的锌离子就会在溶液中移动。