second banana

second-banana的词性：
n.Slang （名词）【俚语】

1. One, such as an assistant or a deputy, who is subordinate to another.
副手：从属于另外一个人的人，如助手或代理

2. One who serves as the straight man opposite the leading comedian in a burlesque.
（喜剧的）配角：在滑稽戏中充当喜剧主角演员助手的人