他中学时不擅长代数.He was not good at algebra in middle school.在代数里, 符号X常用来表示未知数.In algebra, the sign X usually denotes an unknown quantity.他的同学们正在绞尽脑汁地演算初等代数题.His classmates were labouring with elementary algebra....
stories of knights and fair maidens关于骑士和美女的故事Transplantation is not always successful in the matter of flowers or maidens.花儿移栽往往并不成功,少女们换了环境也是如此.Some of the maidens carried pet hens in their arms.有的少女手里抱着玩耍的母鸡....