back pack 背包式灭火器 ; 背架 ; 背包 ; 背负的五加仑灭火器
back-pack camera 背负式电视摄像机 ; 背负式照相机
back pack pump tank 背负式带泵灭火器
back-pack tank 背负式罐
back-pack pump 背负泵
MILITARY BACK PACK 军用背包
back-pack k camera 背负式电视摄像机
WHAT IS THIS BACK-PACK 这是什么背包 ; 此回包是什么
N-COUNT A backpack is a bag with straps that go over your shoulders, so that you can carry things on your back when you are walking or climbing. 双肩包
Steve would whip his camera from his little green back-pack and poke it practically into the creature's mouth, scanning the molars.
史蒂夫从他绿色的背包中拿出照相机，直伸入猎豹口中，拍摄那些臼齿。
Pack heaviest objects close to the body, and place little ones outside, away from the back.
把最重的东西放在靠近身体的地方，把小的放在外面，远离背部。
The interruption was John Canty--with a peddler's pack on his back--and Hugo.
打岔的是约翰·康第——他背着一个小贩的背包——还有雨果。
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