an extensive knowledge of the exact meaning of English words...
alt is very long.ln maths class,youcan useit. lt是非常long.ln算术类, youcan useit。[translate] a相信自己,你能行 Believes oneself, you can good[translate] agood sticky 好稠粘[translate] a我一定坚持继续练习 I persisted certainly continues to practice[translate] ...