2018年商务英语考试高级写作词汇及例句：XYZ

　　Y

　　yield [ ji:ld ] (n.) usable output from a process产量，收益

　　[例] There has been a considerable increase in the yield of the mines

　　Z

　　zero defect (n.) manufactured product which meets the specified quality standard无事故, 无疵残

　　[例] They improved the technique and got zero defect this year.

　　zero inventory (n.) management philosophy and practice based on no waste and constant improvement of productivity零库存

　　[例] The leaders should instill zero inventory into their employees regularly