An order came down from on high that lunchbreaks were to be half an hour and no longer.
上头指示说午餐休息时间不得超过半小时。
《牛津词典》
2
Only half of the spacecraft's six science instruments are still in working order.
宇宙飞船的6种科学仪器中,只有一半还能正常运转。
《柯林斯英汉双解大词典》
3
In order to reduce the amount of residue ash Shelbyville generates this year to half of last year's total, the city has revamped its collection program.