useful
形容詞
UK/ˈjuːs.fᵊl/
US/ˈjuːs.fᵊl/
定義 useful 形容詞
- A2
Capable of providing assistance or achieving a desired result; effective and beneficial.
有用的；有效的；有助益的
This manual is incredibly useful for beginners.
这本手册对初学者来说非常有用。
A flashlight can be a very useful tool in emergency situations.
手电筒在紧急情况下是非常有用的工具。
This application provides several useful features.
这个应用程序提供了几个有用的功能。
成語
- make yourself useful
An expression used to tell someone to start being helpful.
别闲着，帮忙去
• Since you're here, you might as well make yourself useful and help out instead of just standing around.
既然你在这里，不如做点有用的事帮忙，不要只是站着。
- come in useful
To prove to be useful or helpful in a particular situation.
派上用场
• These old tools may seem useless, but they can come in useful sometimes.
这些旧工具看似无用，但有时候它们能派上用场。