1. His father is a thrifty farmer.
    他的父亲是个节俭的农夫。

2. Kept by thrifty people when a parcel has been opened, to save buying these two requisites.
    节俭的人们打开包裹后便把这两样必备的东西收藏起来。省得日后去买。

3. Only very thrifty children manage to fill up a money box.
    但是能把储蓄罐装满的只有屈指可数的几个特别节俭的孩子。