by birth的用法和樣例：
例句
- She is a brunette by birth but a blonde by habit.
她生來頭髮是棕色的，但習慣上是金色的。 - And a man impotent from his birth was there.
那時一個生來就虛弱的人正在那裡。 - Anne was French by birth but lived most of her life in Italy.
安妮在血統上是法國人，但大部份時間住在義大利。 - I'm Brazilian by birth although my parents are Japanese.
雖然我父母是日本人，但我在血統上是巴西人。
