serve a purpose
US /sɜːrv ə ˈpɜːr.pəs/
UK /sɜːv ə ˈpɜː.pəs/
短语
有用途, 有用
to be useful or to have a function
示例:
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Does this old tool still serve a purpose?
这个旧工具还有用吗？
•
Every part of the machine must serve a purpose.
机器的每个部分都必须有其用途。