spare

n. 剩余,备用零件,备用轮胎
a. 多余的,备用的,简陋的
v.节约

It was a horrible accident---I'll spare you the details.

这是一次令人毛骨悚然的事故，我就不告诉你细节了。

What do you like doing in your spare time?

你在闲暇时喜欢做什么？