be up to

• I ' m sure he ' ll be up to no good wherever he is
  我认为他到哪儿也做不出好事来。
• . . . or what he ' s been up to . am i not saying it right
  他现在怎样我说得没错吧
• Do you know what your garbage collector is up to
  您知道垃圾收集器在干什么吗？
• Workspace names can be up to 64 characters long
  工作区名称的最大长度为64个字符。
• Looks like those two are up to something , huh
  最近那两人好象怪怪的,关系暧昧
• Jack : that ' s why i know what barbossa is up to
  那就是为什么我知道巴博萨即将面对
• Shelveset names can be up to 64 characters long
  搁置集名称的最大长度为64个字符。
• Pretty good . what ' s up ? - what have you been up to
  -很好,你呢? -你在忙些什么
• I think he might be up to something dangers
  我觉得他似乎在接触一些危险的东西
• Mr gore says it is up to america to show leadership
  戈尔说美国应当起到表率作用。