Backstepping
n. 逐步退焊法\\nv. 往后退（backstep的ing形式）
🗣️ 情景例句
but this is an important opportunity.
但这是一次很重要的机会。
I don't blame you for doing that.
我不责备你做了那件事。
No, thanks. I can manage it myself.
不，谢谢。我可以自己提。