打包背包
to put things into a backpack
把东西放进背包里
收拾背包
to put things into a backpack, often in preparation for leaving
把东西装进背包，通常是为离开做准备
背背包
to have a backpack on your body
身上背着一个背包
拉开背包拉链
to open a backpack by pulling its zipper
通过拉拉链来打开背包
拉上背包拉链
to close a backpack by pulling its zipper
通过拉拉链来关闭背包
打开背包
to make the inside of a backpack accessible
使得可以拿到背包内部的东西
关上背包
to make the inside of a backpack not accessible
使得无法拿到背包内部的东西
放下背包
to let a backpack fall to the ground
让背包掉到地上
抓住背包
to take hold of a backpack quickly
迅速抓住背包
扔背包
to propel a backpack through the air with a motion of the arm
用手臂的动作将背包抛向空中
抛背包
to throw a backpack lightly or casually
轻巧或随意地扔背包
把背包背上肩
to lift and put a backpack onto your shoulder(s)
提起背包并将其放到你的肩膀上
甩上背包
to put on or carry a backpack carelessly or quickly, often over one shoulder
随意或快速地背上或携带背包，通常是单肩背着
甩动背包
to move a backpack in a curve, for example onto your shoulder
以弧线移动背包，例如甩到你的肩膀上
吊起背包
to raise a heavy backpack, often onto your back
举起一个沉重的背包，通常是背到背上
费力地提起背包
to lift or pull a heavy backpack with a lot of effort
非常费力地提起或拉动一个沉重的背包