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spring (device)
spring (in one's legs); bounce
springboard; impetus
この椅子の撥条がだいぶへたってきた。
The spring in this chair is wearing out.
撥条の力でおもちゃが動く仕組みだ。
The toy moves by the power of the spring.
古い撥条を新しいものに交換した。
I replaced the old spring with a new one.