Backstepping
n. 逐步退焊法\\nv. 往后退（backstep的ing形式）
🗣️ 情景例句
He's up there at the lodge.
他在那边小屋 。
We only live once,, but if we work it right once is enough.
我们生命只一次，好自为之一次足矣。
but we were afraid that the strength of the current would prevent its landing anywhere before it became exhausted.
但我们担心，洪水力量将使它上岸之前就筋疲力尽了。