Backstepping
n. 逐步退焊法\\nv. 往后退（backstep的ing形式）
🗣️ 情景例句
It is not as difficult as it looks.
这并不像看起来那丢难。
Sooner or later,the truth comes to light.
真相迟早会大白。
No, I wasn't.
不， 我不是。