For my math requirements, I'll be taking algebra, calculus, and trig.
数学的必修学分预定选代数、微积分、三角法。
Yet a great many processes depending on such research are sought for with complete secrecy until the stage at which patents can be taken out.
然而,依赖这种研究的很多工艺程序是在完全保密的情况下进行的,直到可以取得专利权的阶段为止。