プログレッシブ和英中辞典(第３版)の解説
たもつ【保つ】
1 〔持ち続ける〕keep up; retain
- 体面を保つ
keep up appearances／save (one's) face - 若さは永遠には保てない
You cannot 「retain your youth [stay young] forever. - よく命を保てたものだ
It is a wonder that he is still alive.
2 〔ある状態を長く続ける〕keep; maintain
- 室温を一定に保つ
keep a room at a fixed temperature - 社会秩序［貿易の均衡］を保つ
maintain 「public order [the trade balance] - 平静を保つ
retain [keep] one's presence of mind