您要查找的是不是：
- optional half instruction 任选半指令
- optional half - hepatic blood occlusion 半肝血流阻断
- The insurance cover is optional. 保险范围可以随意选择。
- I apportioned half the property to each of them. 我把财产的一半分配给他们各人。
- A 4-speed automatic transmission is optional. 四段自动变速器是可自由选择的。
- She reckoned she had cut her cost by half. 她估计她减少了一半的费用。
- I worried half the night and have a fitful sleep. 我半个晚上都一直在担心，故而时醒时睡。
- An optional academic course or subject. 选修的科目选修课程或课题
- He can fling off a poem in half an hour. 他可以在半小时之内草就一首诗。
- It took him half an hour to finish the work. 他花了半个小时做完这项工作。
- I usually go to bed at half past ten. 我通常十点半睡觉。
- The cassette player is an optional extra in this make of car. 这种型号汽车如需盒式磁带唱机费用另计。
- Half the fruit crop froze out in the sudden cold. 一半的水果作物在突如其来的寒流中被冻死。
- Half the oil in the lamp had burnt away. 油灯中一半的油已经烧掉了。
- He knocked out a plan in half an hour. 他半小时就草草订出一个计划来。
- You must do it; you have little option. 你必须做,你没有选择的余地。
- The game didn't heat up until the second half. 游戏玩到后半场才热闹起来。
- It is at your option to stay or leave. 去留随你的便。
- You must do it; you have no option. 你必须做，你没有选择的余地。
- The boss agreed to meet the strikers half way. 老板同意向罢工者做出让步。
