半

• He had poliomyelitis at two and a half .
  他在两岁半的时候患了小儿麻痹症。
• He is now an old man, semi-retired .
  他已年迈，处于半退休状态。
• Half a minute brought it all out .
  半分钟工夫就把一切弄明白了。
• The house burnt down in half an hour .
  那所房子在半小时之内就被焚为平地。
• Hemihydrate can be used instead of gypsum .
  半水物硫酸钙可以用来代替石膏。
• Her hair was loose and half-falling .
  她的头发蓬松，半垂下来。
• Lactose gives glucose and galactose .
  乳糖产生葡萄糖和半乳糖。
• She read for half an hour and went to bed .
  她读了半小时书，然后就睡觉了。
• A semiclassical description is possible .
  半经典描述是可能的。
• He gave only lukewarm support to our plan .
  他只是半心半意地支持我们的计划。