clockwork
n.
also clock-work, 1660s, "mechanism of a clock," from clock, n.1 + work, n.. Figurative sense of "anything of unvarying regularity" is recorded earlier (1620s).
| 词汇 | clockwork | 
| 词根词缀 | Online Etymology Dictionary clockwork n. also clock-work, 1660s, "mechanism of a clock," from clock, n.1 + work, n.. Figurative sense of "anything of unvarying regularity" is recorded earlier (1620s). | 
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