clockwork

發條裝置、鐘錶機械

The old music box is powered by clockwork, not batteries.

這個舊音樂盒是靠發條裝置運作，不是用電池。

發條的、上發條的限定用法

She collects clockwork toys from the nineteen fifties.

她收藏一九五○年代的發條玩具。

準時、一絲不苟、順利無誤like clockwork

The morning deliveries arrive like clockwork every day.

早上的送貨每天都準時得像時鐘一樣。