Check your employee handbook or ask a supervisor what the vacation policy is at your workplace. Figure out how many days you have available, how and when they accrue, and if you are eligible for paid time off.  Seniority might also affect how many days you can take off and when you can take a vacation. If you are a new employee, check to see if you are eligible for time off yet. Taking time off when you are a new employee can be difficult, and your supervisor might not be enthusiastic. It will be easier to take time off if you are not involved in an ongoing project, or if there are no impending deadlines. If your company has a certain time of the year that is very busy, you should try to avoid taking days off work during that period.  If you need time off during a busy period for an unexpected emergency or opportunity, provide a strong explanation for your request. If possible, ask if anyone else is considering taking time off around the dates you want. If your place of employment is short-staffed, it will be harder for your supervisor to grant your request.  If your request for time off is granted, remind your coworkers that you will be gone about a week before you take your time off work. You should ask for days off at least 2 weeks before the date you want to start your time off. Generally, the more advance notice you are able to provide, the better the chances you have of getting the time off. Letting your supervisor know that  you plan on taking time off several weeks, or even a month, before you plan on leaving will allow your workplace to prepare for your absence. The longer you plan on taking off work, the more advance notice you should provide. Giving 2 weeks notice for a few days off is sufficient. If you will be gone for a week or more, you should try to let your boss know at least 1 month before you plan to leave. If there are tasks and responsibilities that you would do during the time you are requesting off work,  complete as many of them as you can before you leave. Assuring your coworkers that...

How would you rephrase that briefly using Chinese?
查看公司的请假制度。 在不忙的时候请假。 提前两个星期请假。 休假前尽量多完成些工作。