or
词形变化：
同义词：
else | conversely | otherwise | optionally | alternatively | contrarily | operating theater | operating room | Beaver State | surgery | operating theatre | Oregon |
反义词：
nor |
词义辨析：
同义:
conj.否则, 或者
otherwise
else
conversely
alternatively
optionally
contrarily
反义:
conj.或者
nor