空

• Is there a time when the conference room is free ?
  会议室有空着的时候吗？
• This tree has been eaten hollow by worms .
  这棵树被虫子蛀空了。
• The theatre was almost empty last night .
  剧院昨晚几乎是空的。
• The trees are widowed of their fruits .
  （诗）果实摘光树空留。
• He is watching for an opportunity of retiring quietly .
  他在瞅空悄悄离开。
• The unused inputs are tied to ＋5v .
  把空的输入端连接到5伏。
• The house has stood empty for months .
  那所房子空了几个月了。
• Please return all empty milk bottles .
  请把空牛奶瓶全部退回。
• There are some vacant offices on the third floor ..
  三楼有几间空着的办公室。
• The sun swung steadily up the sky .
  太阳平平稳稳地升上天空。