Older cars will begin to rust.
舊車將會開始生銹。
Years of being left out in the rain had rusted the metal chairs.
這些鐵椅子由於長年在室外淋雨已經生銹了。
The floor of the car had rusted away/through (= been destroyed by rust), so I was careful where I put my feet.
車的底板都銹壞/爛了,所以我放腳時很小心,不能亂踩。