substitute
Definition
A person or thing acting or serving in place of another; to replace one person or thing with another.
中文 代替另一个人或事物而行动或服务的人或物；用另一个人或物替换一个人或物。
Example
"Because the teacher was ill, a substitute took her class."
A person or thing acting or serving in place of another; to replace one person or thing with another.
中文 代替另一个人或事物而行动或服务的人或物；用另一个人或物替换一个人或物。
"Because the teacher was ill, a substitute took her class."