just a minute/moment/second idiom
A2 稍等一会儿
used to ask someone to wait for a short period of time
Just a second - I've nearly finished. 等一下——我快干完了。
mainly UK（用来打断说话人，要求解释或表示安慰、异议）且慢，请稍等一下
used to interrupt someone in order to ask them to explain something, to calm them, or to express disagreement
Just a minute - can you tell me how to do that again? 请稍等一下——你能再告诉我一遍怎么做吗？