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- extroral protraction 口外弓
- Let's not protract the debate any further. 我们不要再继续争论下去了。
- Further protraction of the discussion will not achieve anything. 继续讨论下去并不能解决任何问题。
- To lengthen in duration; protract. 延长增加持续时间；持久
- To protract for an indefinite period. 无穷无尽地延伸
- To lengthen in duration;protract. 延长增加持续时间；持久
- It can protract live-span and improve the corrosion periods. 延长了使用寿命,大大提高了防腐使用周期。
- The inspector informed us that he was to protract his stay for some days. 督察通知我们他将在此多呆几天。
- This method effectively prevents protraction of shorten of system clock. 该方法能有效防止系统的时钟周期因意外的原因伸长或缩短。
- High structure strengh,hot dip galvanized,greatly protract time of use. 高强度管材、产品经热镀锌处理、大大地延长了使用寿命；
- Delay always breeds danger, and to protract a great design is often to ruin it. 推迟经常孕育危险，拖延一个伟大的工程常常意味着毁灭它。
- Delay always breeds danger;and to protract a great design is often to ruin it. 推迟经常孕育危险；
- Delay always breeds danger; and to protract a great design is often to ruin it. 推迟经常孕育危险；拖延一个伟大的工程常常意味着毁灭它。
- To protract the suspense, he paused for a considerable period of time before telling us the result of the experiment. 为了延长悬念，他在告诉我们实验结果之前停顿了相当一段时间。
- The distributed test system enables to survey and protract the body pressure distribution curve of different seat cushion effectively. 实验台中的分布式体压测试系统能够有效地测绘出不同座垫实验中的人机接触界面的体压分布曲线，并发挥出很好的测试作用。
- How is conjunctivitis treated the fastest? Protraction is time consequence serious? Drop what eyedrop is best? 结膜炎怎样治疗最快?拖长了时间后果严重吗?滴什么眼药水最好?
- It is the time that intended protraction makes love, namely to lengthen pleasure. 一是有意拖长性交的时间，也就是为了延长快感。
- Results The new anchorage implants were stable almost in every protraction experimental study. 结果在所有实验中支抗种植体稳定性良好。
- Objective:The aim of the this study was to investigate the effects of the maxillary protraction . 目的:从颅面软组织的改建探讨前方牵引的临床疗效。
- Result: The profile improved slowly more than half a year in maxillary protraction treated group. 结果:前方牵引后侧貌改善较慢,一般需半年以上。
