请将以下中文翻译成英文，非常感谢。

To avoid interpersonal conflicts in the workplace, RIFCO computer company has required all worker to take an ability-learning class which aims to positively listen to their opinions. This kind of ability can teach people how to express their feelings without offending others. This ability has apparently already benefited the company. Five years ago, 200 new workers voluntarily took the one-day course. Five years later, only 5 percent of the workers have officialy complained to the Human Resources Department, and the complaint rate of the entire company of that time was only 15%.

是手打的

In order to avoid interpersonal collision in work site,RIFCO inc ask all personel to take a skill lesson which aimed at lerning to take positive opinions,this would help people know how to express without afronting others.This skill obviously benefited the inc itself.5 years ago,200 new staff attend the lesson for one day by will.After the 5 years,only5% of them sent official complaint to the personel department,and the complain ratio ant that time is 15%
纯手打

In order to avoid the interpersonal conflict in the workplace, RIFCO computer company requires all employees to participate in a skills course aims to actively listen to their views, this skill can teach people how to don't blame others to express their feelings. The skill has clearly made the company benefit bandit shallow love. Five years ago, 200 new employees voluntarily attended a one-day course. Five years later, only 5% of the member have raised a formal complaint to the human resources department, and the whole company in the period measured at 15%.