1530s, "walk about, roam freely," from Latin expatiatus/exspatiatus, past participle of expatiari/exspatiari "wander, digress, wander from the way; spread, extend," from ex- "out" (see ex-) + spatiari "to walk, spread out," from spatium (see space (n.)). Meaning "talk or write at length" is 1610s. Related: Expatiated; expatiating.
例文
1. The tendency to expatiate and make much of local advantages was Western.
うれしそうに小言を言ったり、地元の良さを誇張したりする性質は西部特有のものだ。
2.My present purpose is not to expatiate upon my walks.
今は私の散歩をネチネチ描くつもりはありません。
3.It is unnecessary to expatiate on the effect of this downright refusal of the woman 's proposals.