“由来”造句

这座古建筑的由来已经失传了.
The origins of this ancient structure are lost in antiquity.

“那就是你脸上那道伤疤的由来?”贝丝好奇地问道。
"Is that how you got that scar on your face?" Bess asked curiously.

其名字的由来鲜为人知。
The derivation of its name is obscure.