The double speed switch has the advantages of simple structure and good transmission effect.
这种结构的双速开关结构简单、传动效果好。
Single is simple, double is trouble.
一个人很简单，两个人很麻烦。
Don't order a double burger! So simple, but so sensible. Why double the calories?
不要点双层汉堡包！原因简单但非常合理：为什么要摄入双倍卡路里呢？
Compact double color, not simple fashion effect!
简洁的双色，不简单的时尚效果！
Conclusion The double eyelid operation with middle incision is a simple and effective method.
结论中切口重睑成形术创伤小，恢复快，是一种简便有效的方法。
Also use the double colors design, fine workmanship, simple and generous.
同样采用双色设计，做工精细，简约大方。
Also use the double colors design, fine workmanship, simple and generous.
同样采用双色设计，做工精细，简约大方。
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