clockwork
🇺🇸
/ˈklɑːkwɜːrk/
🇬🇧
/ˈklɒkwɜːk/
The mechanical parts inside a clock or similar device that make it work.
The clockwork in the antique clock was still functioning perfectly after a century.
古董钟里的机械装置经过一个世纪后仍然完美地运作着。