n.微积分；算法；结石
I had studied calculus before I got into college. 我在上大学以前,已经学过微积分。
Calculus is over the heads of most students. 微积分对大多数学生来说太难学了。
This is a problem where calculus won't help at all. 对于这一题，微积分一点也用不上。
I think I've finally unzipped this calculus problem. 我认为我最终解出了这道微积分题。
My acquistion of calculus was a slow and painful process. 我掌握微积分的过程是缓慢而又痛苦的。
Does urine road calculus eat black fungus correctly? 尿路结石吃黑木耳正确么？
This method is suitable for intrarenal staghorn and othercomplex pyelolithiasis with multiple calyceal calculus. 适合于肾内型肾盂鹿角状或铸状结石并发肾盏多发性结石的治疗。
