例句與造句

1. Men working overhead must ensure that materials and tools are properly secured to prevent them from falling at all times
   工人在空中作業(yè)時(shí)，必須確保材料和工具放置牢靠，不得讓其從空中掉下。
2. It's difficult to find working overhead in a sentence. 用working overhead造句挺難的