Backward difference
[计] 后向差分
🧩 词语组成解析
🗣️ 情景例句
and I continued with my career.
而我则继续我的事业。
In for a penny,in for a pound.
做事一开头，就要做到底；一不做，二不休。
It was very dark, so they turned on a torch.
饭厅很暗，于是他们打开了手电筒。