陪练

你也想让小羽老师当 陪练 对啊 对啊

(教得好不好) ── Previous context

“Do you want Ms. Yu to be your running partner, too? Yes.”

就当作是你平时做 陪练 的时候

(你就这么想吧) ── Previous context

“Treat it like your usual sparring sessions.”

只 陪练 不上台的那一种

(啥是影子) ── Previous context

“The kind who rehearses and never performs.”