Backward difference method
[计] 后向差分法
🧩 词语组成解析
🗣️ 情景例句
They'll be here soon, and then we'll eat.
他们马上就到。他们一到就开饭。
Her garden was most fragrance in the spring.
她家的花园到了春天芬芳四溢。
one ought to have at least two or three hobbies, and they must all be real.
至少应有两三种爱好，而且都比较实际。