• n. 主要動力；（鐘表）主發條；主要原因；主要動機

main,主要的，spring,彈簧，發條。引申詞義鐘表的主發條等。

mainspring (n.)

1590s, of watches, clocks, etc., from main (adj.) + spring (n.3). Figurative use from 1690s.

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

你開始體會到是什么樣的行動在推動這個故事的發展。

來自柯林斯例句

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

我以音樂為生，對音樂的不懈探索已經成為我生活的動力。

來自柯林斯例句

3. Her jealousy is the mainspring of the novel's plot.

這部小說情節中貫穿了她的忌妒之心.

來自辭典例句

4. The mainspring makes the watch motion.

發條帶動表走.

來自辭典例句

5. Fear is the mainspring of war.

恐懼是戰爭的主要動力.

來自辭典例句