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- Why is coarctation a concern? 为什么关注缩窄？
- Why is an atrial septal defect a concern? 房间隔缺损有什么危害?
- Why is atrioventricular canal a concern? 为什么房室通道受到关注?
- Why is tricuspid atresia a concern? 为什么关注三尖瓣闭锁?
- Why is truncus arteriosus a concern? 为什么关注共同动脉干?
- Why is transposition of the great arteries a concern? 为什么主动脉狭窄受到关注?
- Just what is sprawl, and why is it really a concern? 到底什么是蔓延，为何真要为它操心？
- Why is he in such a lather to get money? 他为什么这样急躁，非弄到钱不可?
- He had a concern in the business. 他是这个企业的股东。
- How is coarctation of the aorta diagnosed? 怎样作出主动脉缩窄的诊断？
- Why is it that we should be afraid of him? 我们为什么要怕他呢？
- Wheel wear is a concern on most metro systems. 对大部分地铁系统来说车轮磨损事关重大。
- Why is it that I always land up cleaning the bath? 为什麽总是该我来洗刷浴缸?
- Why is swimming such a good way to work out? 为什么游泳是锻炼身体的好方法?
- Why is it that he rarely mentions his childhood? 他为什么很少提到他的儿童时代呢？
- Why is the Silicon Valley a New Economic Model? 为什么硅谷成为一种新的经济模式?
- She has a concern in that company. 她在那家公司有股份。
- Why is a rifle like a lazy worker? 为什么步枪就像一个懒惰的工人?
- Why is it a prerequisite for business success? 为什么它是业务成功的一个前提条件?
- Why is it so hard for you to keep a secret? 为什么对你来说保守秘密是如此的艰难?
