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.

当暴露于柠檬汁酸时候，酸就会氧化，或者是把里面电子移除，所以带正电离子就会在溶液中移动。

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，只是有点繁琐，有些地方需要注意，它氧化得很快，所以在准备时候，用柠檬摩擦它就很明智。

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.

这人有五岁，是个久经海上风波老水手，说话挺冲，看样子是个不大好交往人。他圆睁着两只大眼睛，面如青铜，头发棕红，身材，点也不象人们在社会上经常接触到人。

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效果，也就是氧化聚乙烯。

In case you didn't know, black tea is oxidised when green tea isn't.

不知道话告诉你，红茶是经过氧化处理，而绿茶则未经此过程。

Bioleaching relies on the metabolism of certain naturally occurring bacteria, such as Acidithiobacillus ferrooxidans, which produce oxidising agents that dissolve metals into solution.

生物浸出依赖于某些天然细菌代谢，例如氧化亚铁硫杆菌，它能产生氧化剂， 将金属溶解在溶液中。

So this is again fluorine with sulphur. So you are going to oxidise the sulphur, probably to sulphur tetrafluoride or sulphur hexafluoride.

因此， 这里再次涉及氟与硫反应。 你将会氧化硫，很可能会将其氧化为四氟化硫或六氟化硫。