例句與造句

1. How to give the correct schemes of trouble hunting of catenary within short time is a problem that has been needed to solve urgently all the time
   如何在短時(shí)間內(nèi)給出正確的接觸網(wǎng)故障檢修方案是一直以來迫切需要解決的問題。
2. It's difficult to find trouble hunting in a sentence. 用trouble hunting造句挺難的