n.(尤指登山者或远足者使用的)背包，旅行包

原形：rucksack复数：rucksacks

I packed my essentials into a rucksack for the hiking trip.
我把必需品装进背包里准备徒步旅行。
She carries her laptop in a padded rucksack to protect it from damage.
她用有衬垫的双肩包背着笔记本电脑以防止损坏。
The boy slung his rucksack over one shoulder and set off to school.
那男孩单肩挎着背包出发去上学了。
The mountaineer's rucksack was filled with ropes, carabiners, and other climbing gear.
登山者的背包里装满了绳索、卡扣和其他登山装备。
The hiker adjusted the straps on her rucksack for a more comfortable fit.
徒步者调整了背包的带子以适应更舒适的背负。
His rucksack was so heavy that he could barely lift it off the ground.
他的背包太重了，几乎提不起来。
After a long day of trekking, she collapsed on her bed, still wearing her rucksack.
经过一整天的徒步，她疲惫地躺在床上，背包还背在身上。
The rucksack had a waterproof cover to protect its contents during rain.
这个背包有一个防水罩，可以在下雨时保护里面的物品。
The traveler stowed his passport and money in a secret compartment of his rucksack.
旅行者把护照和钱放在背包的一个秘密隔层里。
The school's uniform policy included a compulsory black rucksack for all students.
学校的制服规定包括所有学生必须携带黑色的双肩背包。