Steppingstone
n. 踏脚石，达到目的的手段
🗣️ 情景例句
I can't wait till he's just a little older.
我迫不及待地希望他长大些。
Custom rules the law.
习俗影响法律。
Here and here. And I can only move my arm as much as this.
这儿和这儿。我只能这样摆动手臂。