If you've always wanted to further your education or?upgrade your skills but haven't had the time, online courses may be the answer.
如果你一直想进一步提高教育水平或提升技能，但却没有时间的话，那在线课程可能就是解决之道。
2
I was killing my time at home until June 2012 when I discovered the online computer courses of your training center.
直到2012年6月，我才发现你们培训中心的在线计算机课程，在此之前，我一直在家打发时间。
3
Students studying for a particular degree will take a series of lecture courses which run in parallel at a fixed time in each week and may last one academic term or the whole year.