Steppingstone
n. 踏脚石，达到目的的手段
🗣️ 情景例句
OK. Let's see.
好 ，让我们看看。
You lie!
你撒谎！
Be that as it may, the nerve poison does its business with man far more quickly than the blood poison.
不过，神经毒辣液比溶血性毒液在人身上起作用快得多。