They usually work on computers at school for at least two hours during the day.
他们通常每天在学校用电脑学习至少两个小时。
Improvements in a firm's information technology hardware and software are a proven way to increase the efficiency of employees who do the majority of their work on computers.
改进公司的信息技术硬件和软件已被证明是提高在电脑上工作的员工效率的有效方法。
For instance, if we work on computers too long, we may get headaches or sore eyes.
例如,如果我们在计算机前工作太久,也许就会头疼或眼睛酸涩。
应用推荐