[語法] no +比較級(+ than)は as +反意語の原級(+ as)に直して考えるとわかりやすい： He is no better (than yesterday). ＝He is as bad (as yesterday). 彼の具合は昨日と同じくらいよくない / no less than 50 books ＝as many as 50 books 50冊もの本 / This book is no less interesting than that. ＝This book is as interesting as that. この本はあれに劣らず面白い.