by reason of
((形式))…のゆえにby reason of age年齢を理由に
by return (mail [((英))of post])
折り返し便で，すぐにでもPlease reply by return.至急返事をください
by [in] right of A
((形式))Ａ（事）の理由で，Ａ（人）の権限で
by rights
((略式))本来［本当］なら，ふつうなら
by [according to] rule
規則によって，規則どおりに，しゃくし定規に，機械的に
by sea
海路で，船で
by steam
汽船で
by [according to] the book
型［規則］どおりにgo by the book規則どおりに行う
by the bucket
((英略式))大量に
by the by
＝by the BYE1
