Definition: most important or largest Level: B1
主要车站距离市中心10分钟路程。
The ___main station is 10 minutes from the city centre.
污染的主要原因之一是工业废物。
One of the ___main causes of pollution is industrial waste.
她的主要兴趣是弹钢琴。
Her ___main interest is playing the piano.
