Backstepping
n. 逐步退焊法\\nv. 往后退（backstep的ing形式）
🗣️ 情景例句
And good stuff, too.
而且都很精采。
That's fine. What time do I have to be at the airport?
好的。我应该几时到达机场？
in the belief that they may one day need just those very things.
相信总有一天需要的正好是那些东西。