Backward error analysis
[计] 后向误差分析
🧩 词语组成解析
🗣️ 情景例句
I see. What time will she come back?
哦，那她几点会回来？
Don't forget to put stamps on the letter before you mail it.
不要忘记在寄信以前把邮票贴在信封上。
She was not especially pretty. But she was extremely bright.
她不是特别漂亮，但她极聪明。