mainspring

名词 n.
中文释义

英文释义

名词 n.
  1. The principal spring of a clockwork mechanism, which drives it by uncoiling.
    — He was wise, for he had seen a long succession of mechanical toys arrive to boast and swagger, and by-and-by break their mainsprings and pass away.
  2. The most important reason for, or element of, something. figuratively
    — My daughter is the mainspring of my life.

词形变化

mainsprings plural

词源

From main + spring. For figurative sense, compare spring (“source, origin”).
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