by natural consequences
自然の成り行きで
by no stretch [not by any stretch] of the imagination
いかに想像をたくましくしてみても…ではない
by occasion of illness
病気のために
by one's bootlaces
（敵に対し）１人で向かって
by [on] one's faith
誓って，確かに
by [on] one's own admission
自ら認めるように
by parcels
少しずつ
by parol
口頭で
by piecemeal
少しずつ
by [for] preference
好んで
