プログレッシブ和英中辞典(第4版)の解説
-さえ
❶〔さらに〕
雨さえ降ってきた
On top of that [everything], it began to rain.
❷〔…ですら〕even
彼さえ知らないのだからだれも知らないだろう
If even he doesn't know, then nobody does.
ABCさえ書けない
He can't even write the alphabet./He cannot so much as write the alphabet.
1滴の水さえない
There is not even a drop of water (to be had [found]).
彼は兄弟にさえ裏切られた
He was betrayed even by his own brothers.
❸〔そのことだけで十分〕
もっと勉強しさえすれば試験に合格できたのに
If only you had studied harder, you could have passed the examination.
これさえあれば十分だ
This is all I need.