second-stringer
构词拆分
second string词根/词干
+
-er后缀
(added to verbs) A person or thing that does an action indicated by the root verb; used to form an agent noun. · (added to verbs, informal) A person or thing to which the root verb is done or can be done satisfactorily.
释义（英文）
名词 Noun
- A person who plays second string. A person who is kept on a sports team as a backup in case a "first-string" player is unavailable.
- A person who is not good enough to be considered proficient but may be useful as a backup.