Watcher
来自Big Physics
wiktionary
From Middle English wacchere, wachere, wacher, equivalent to watch + -er.
etymonline
watcher (n.)
late 14c. (early 13c. as a surname), agent noun from watch (v.).
From Middle English wacchere, wachere, wacher, equivalent to watch + -er.
watcher (n.)
late 14c. (early 13c. as a surname), agent noun from watch (v.).
