Backward error
[计] 后向误差, 反向错误
🧩 词语组成解析
🗣️ 情景例句
Do you think the skirt length is right, Ellen?
觉得这裙子长度合适吗，Ellen？
I have received a letter from my cousin.
我收到了我表兄的信。
But here we come up against the most difficult of all obstacles to contact with people on other planets ----the astronomical distances which separate us.
然而，在和外星人联系中我们遇到的最大困难是分隔我们的天文距离。