发出信号

• To signal a single thread , use the
  若要向单个线程发出信号，请使用
• That signals an error has occurred
  发出信号指出有错误发生的
• To push the attribute value onto the
  发出信号以将属性值推入
• The big guns boomed their message
  大炮轰隆隆响地发出信号。
• The big guns boomed their messages
  大炮轰隆隆地发出信号。
• To signal an overflow condition
  以发出信号表示溢出状况。
• And signals when the timer has been disposed of
  的当前实例使用的所有资源并在释放完计时器时发出信号。
• Transport department - giving signals
  运输署-怎样发出信号
• Has signaled that the operation was a success or failure
  是否已发出信号说明操作成功或失败的boolean值。
• Signal signal what you intend to do , provided it is safe
  发出信号：如果安全，便应发出信号，表明你的意向。