serve the purpose of

• vt. 可用作(可充当)

serve the purpose of的用法和样例：

例句

用作及物动词 (vt.)

1. The Derby winner is now standing.
   这匹在马赛中获胜的马现在用作了种马。
2. A literal constant cannot serve as an lvalue.
   一个文字常量不能用作左值。