The main reason was that steel cables degrade very, very quickly in contact with saltwater.
主要原因是钢索与盐水接触后降解非常快。
2
No reason to get worried like that, just contact your chairperson immediately.
不需要这么担心，只要马上联系你的系主任就好了。
3
Unless you have a mutual contact that is putting you in touch for a specific reason, it's best to avoid asking for anything when you make that first contact.