我的夹克袖子太长了，需要改短一点。

The ___sleeves of my jacket are too long and need to be shortened.

我把CD放回它的塑料套里。

I put the CD back into its plastic ___sleeve.

她的整条手臂都纹满了花纹，形成了一个完整的纹身袖套。

Her entire arm is covered with intricate patterns, forming a full ___sleeve tattoo.