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1·My life has been music, and a constant search for it has been the mainspring of my life.

我为音乐而生，对音乐的不懈探索已经成为我生活的动力。《柯林斯英汉双解大词典》

2·You begin to understand what actions were the mainspring of the story.

你开始明白什么是这个故事的主要情节了。《柯林斯英汉双解大词典》

3·In the early 1400s came the invention of the coiled spring or fusee which maintained constant force to the gear wheels of the timekeeper despite the changing tension of its mainspring.

在15世纪早期，人们发明了螺旋弹簧或均力圆锥轮，尽管它的主弹簧的张力不断变化，但仍能对计时装置的齿轮保持恒定的力。

4·The love of music was a mainspring of his life.

对音乐的热爱是他一生中的主要部分。

5·Her jealousy is the mainspring of the novel's plot.

这部小说情节中贯穿了她的忌妒之心。

6·It has been the mainspring of every subversive movement during the 19th century.

它一直是主要动力，每颠覆运动，在十九世纪。

7·The movements of the wrist make the rotor swing and this winds the mainspring automatically.

腕部的运动使得摆锤摇摆，自动使主发条上紧。

8·The mainspring that enterprises merge is to seek the cooperative effect, namely obtain the result of 1+1> 2.

企业并购的主要动机是谋求协同效应，即获取“1+1> 2”的效果。

9·The first watches appeared shortly after 1500, when the mainspring was invented as a replacement for weights in driving clocks.

在1500年初用发条代替钟锤来驱动时钟发明后不久，就出现了第一批表。

10·If we were unable to observe these inequalities, we would have to invent them because they are the mainspring of economic growth.

如果我们不能观察这些不平等，我们必须发明他们，因为他们是经济增长的主要动机。

主要动机

1·If we were unable to observe these inequalities, we would have to invent them because they are the mainspring of economic growth.

如果我们不能观察这些不平等，我们必须发明他们，因为他们是经济增长的主要动机。

2·The mainspring that enterprises merge is to seek the cooperative effect, namely obtain the result of 1+1> 2.

企业并购的主要动机是谋求协同效应，即获取“1+1> 2”的效果。