adv.狡猾地；顽皮地
The arch has a span of 60 metres. 那个拱的跨度为60米。
The boy walks through the undecorated arch. 那男孩走过未经装饰的拱门。
They considered him their arch opponent. 他们将他看成是主要对手。
Marble Arch is a famous London landmark. 大理石拱门是著名的伦敦标志。
Go through the arch and follow the path. 穿过拱门，沿著那条路走。
Have you been to the Triumphal Arch? 你去过凯旋门吗？
