- 不好意思，现在线路繁忙。
Sorry, the line is busy now.
- 不好意思，这本书已经卖完了。
Sorry, the book is out of stock.
- 不好意思，请问这条路通往地铁站吗？
Excuse me, but is this the right way to the subway station?
- 我这么迟才回信，真不好意思。
Excuse me for not having answered your letter sooner.
- 只要还活着，我永远忘不了你的好意。
I will never forget your kindness so long as I live.
