半

• Tonight 's play begins at 7:30 .
  今晚的演出七点半开始。
• Cut it into two exact halves .
  把它切成同样大小的两半。
• She cut the cake into two parts and gave me half .
  她把蛋糕切成两半，给了我一块。
• The semi drunk man regarded them with fishy eyes .
  那个半醉汉迷迷糊糊地看着他们。
• The second half of that proverb will hold no longer .
  这句谚语的后半句不再有用了。
• It 's about half an hour 's journey .
  大约半小时路程。
• This membrane is semi-permeable .
  这层膜是半渗透性的。
• He signed on at half past seven .
  他于七点半签到上班。
• Tonight 's curtain is at 7:30 .
  今晚的演出七点半开始。
• Either half of the major axis is called a semimajor axis .
  长轴的每一半叫做半长轴。