- (British English also rucksack)
a bag that you carry on your back, made of strong material and often used by people who go climbing or walking （尤指登山者或远足者使用的）背包，旅行包 
She swung her backpack over her shoulder. 她把背包甩到背上。 He was wearing a heavy backpack. 他背着一个很沉的背包。
Oxford Collocations Dictionaryadjective- leather
- bulging
- loaded
- …
- grab
- shoulder
- drop
- …
a piece of equipment that is carried on the back 背负式设备 a weed-sprayer backpack 背负式喷雾除草器
Extra ExamplesIn the study, birds were fitted with a 28g backpack radio transmitter. 在研究中，鸟类配备了28克背包无线电发射器。
