subtract /səbˈtrækt/ vt. 减(去):subtract six from 10 十减六 That subtracts nothing from his merit. 那丝毫没有减损他的功绩。
subtraction /səbˈtrækʃən/ n. [u] 减(法),减去:The difference is found by subtraction.用减法得出差额。The children are learning addition and subtraction.孩子们在学习加法和减法。