1、
In the past, there were only single-decker buses. Nowadays, some buses are double-decker buses.
在过去，只有单层公车，而现在，很多都是双层的公交车。
词典例句
2、
3、
Mr Johnson has banished the dreadful single-decker "bendy buses" from London's streets.
约翰逊已将奇丑的单层“弯曲大巴”（bendy bus）赶出了伦敦街头。
词典例句
