N1Often tested名

ひけつ⓪
秘訣
secret (of success); key; trick of the trade
健康の秘訣は早寝早起きです。
The secret of health is early to bed and early to rise.
N1Often tested名

ひけつ⓪
secret (of success); key; trick of the trade
健康の秘訣は早寝早起きです。
The secret of health is early to bed and early to rise.