traction造句
        Is there an alternative to 
traction for a broken leg?
对于腿部骨折有什么方法替代牵引治疗吗?
He spent six weeks in 
traction after he broke his leg.
他腿部骨折后做了六个星期的牵引治疗。
We may continue the 
traction up to three weeks, until the fracture is healed.
我们可以继续牵引三周, 直到骨折痊愈为止.