Backstepping
n. 逐步退焊法\\nv. 往后退（backstep的ing形式）
🗣️ 情景例句
She has not indicated how she proposes to react.
她未表示打算做何回应。
The sooner, the better.
越快越好。
There are also endless numbers of birds in the tar as well.
沥青坑里还有无数只鸟的尸体。