1·When they feel frightened, they roll up into a ball to protect themselves.
当它们感到害怕时，它们会蜷缩成一团来保护自己。
2·Duh you have to roll up the Windows first!
嗯……你必须先把车窗摇上去！
3·Figure 3: Roll up generalization strategy.
图3：上滚一般化策略。
4·Roll up your sleeves; it's world blood donor day.
卷起你的袖子。今天是世界献血日。
5·Can you roll up your sleeve for me to have a look?
你能把袖子卷起来让我看看吗？
6·He too would roll up his sleeves and scribble for money.
他也卷起袖子，为钱乱写一通。
7·It is time for him to roll up his sleeves and concentrate.
现在是时候集中精力大干一场了。
8·Button down his shirt If you roll up your sleeves, bigger can be better.
穿带有衣领扣的男式衬衫如果你要卷起袖子，卷得大一点比较好。
9·No matter how ambitious the plan, you have to roll up your sleeves and start somewhere.
无论你的计划多么宏伟，你都需亲自卷起袖子，从某一点着手。
10·Now that we've covered the basics, let's roll up our sleeves and dive into the details.
了解基本知识后，现在可以卷起袖子深入细节了。
1·Roll up your sleeves; it's world blood donor day.
卷起你的袖子。今天是世界献血日。
2·Windows only: Tiny utility WinRoll adds window management capabilities to the system context menu—simply right-click on any window's title bar and it will roll up into just the title.
仅适用于windows：小巧的工具WinRoll给系统右键菜单增加了窗口管理能力：只要在窗口标题栏的任何位置按下右键，窗口就会向上卷起收入到标题栏中。
3·Flexibility doesn't mean you'll be able to roll up the screens and stuff them in your backpack, but it is key to making readers with larger screens light enough to hold conveniently in one hand.
弹性并不意味着你可以卷起屏幕塞进背包，但它是生产读者可以用单手方便持有的轻质更大屏幕阅读器的关键。
4·When you have too many ideas and not enough people who are willing to roll up their sleeves and get stuff done, you are going to find yourself late to the game.
当你有太多的想法却没有足够的人愿意卷起袖子干事的时候，你会发现自己在比赛中落后了。
5·Roll up your sleeves.
卷起你的袖子。