Steppingstone
n. 踏脚石，达到目的的手段
🗣️ 情景例句
Good evening, how may I help you sir?
晚上好，你需要帮助吗？
He is very nervous, so he takes a lot of pills.
他非常的神经质，所以要服很多药
some snakes manufacture a poison different in every respect from that of others,
有些蛇产生的毒液也在各方面与另外一些毒蛇产生的毒液不同，