据报纸上说,一架直升机失踪了 it is said in the news that a helicopter is missing 只要你按时还,我可以把钱借给你(as long as...) As long as you return back in time, I can lend you the money 让孩子远离施工现场(keep...away from) Keep the children away from the construction site 一个五年计划 A five-year plan 一个三岁男孩 A three- year- old boy 一座20米长的桥 A 20 -meter -long bridge 一张10镑的钞票 A 10-pound paper bill 望有帮助.