She is fascinated by algebra while he considers it meaningless nonsense.她对代数非常着迷，而他却认为代数毫无意义。His classmates were labouring with elementary algebra.他的同学们正在绞尽脑汁地演算初等代数题.The central notion in commutative algebra is that of ...
He was not good at algebra in middle school.他中学时不擅长代数.In algebra, the sign X usually denotes an unknown quantity.在代数里, 符号X常用来表示未知数.His classmates were labouring with elementary algebra.他的同学们正在绞尽脑汁地演算初等代数题....