プログレッシブ和英中辞典(第4版)の解説
たもつ【保つ】
❶〔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.
❷〔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