But some things are personal or private, and questions about them are not polite.
但是有些事是私人的,问这些方面的问题是不礼貌的。
My brother has a bad headache.
我的兄弟患严重的头疼。
It took him some time to connect the long rubber pipe to the air supply pipe that ran round the port, but at last it was done and as a result work was able to progress much faster.