Backspacing
[计] 反绕, 返回, 退回
🗣️ 情景例句
I took out a government loan to pay for college.
我靠政府贷款上的大学。
Kept waving to her mother until the train was out of sight.
不断地冲她的母亲挥手，直到火车驶出了视线。
Once waves have been generated,
一旦波浪形成，