Jack is extraordinary in that he's able to reduce a very complicated set of features into a very elegant but simple solution that 'just works,' which is orders of magnitude more difficult.
但杰克却与众不同，因为他能把非常复杂的功能简化成精炼而又简洁的解决方案，并且‘效果非常好’，但事实上，做到这一点难度更大。
Jack: I have taught myself Japanese in college, and I can carry on simple conversations in Japanese.
杰克：我在大学时自学过曰语，能用曰语进行一些简单的对话。
The ordinary screw jack depending on the thread self-locking action support heavy item, the structure is simple, but the transmission efficiency is low, the return trip is slow.
普通螺旋千斤顶靠螺纹自锁作用支持重物，构造简单，但传动效率低，返程慢。
The invention has the advantages of a double locking structure by use of the plug, the jack and the movable button, high safety and simple structure and is not easy to be lost.
本发明的有益效果在于：采用插头与插孔和活动扣的双重扣紧结构，安全性高，结构简单，不易丢失。
The invention has the advantages of a double locking structure by use of the plug, the jack and the movable button, high safety and simple structure and is not easy to be lost.
本发明的有益效果在于：采用插头与插孔和活动扣的双重扣紧结构，安全性高，结构简单，不易丢失。
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