您要查找的是不是：
- The insurance cover is optional. 保险范围可以随意选择。
- The rush hour traffic is murder. 交通高峰时间真是难以忍受之事
- A 4-speed automatic transmission is optional. 四段自动变速器是可自由选择的。
- The black sedan suddenly drew out into the traffic. 黑色轿车突然开动，驶进了车流。
- The new road will soon be opened to traffic. 这条新马路不久就可通车。
- Heavy traffic poses a problem in many old towns. 交通拥挤是许多旧城镇的难题。
- What are the duties of a traffic warden? 街道停车管理员的职责是什麽?
- An optional academic course or subject. 选修的科目选修课程或课题
- Traffic was interrupted by a dense fog. 交通因浓雾而受阻。
- The noisy traffic is a continual annoyance. 交通噪音时时刻刻令人烦恼。
- The noise of traffic grows louder and louder. 交通的噪音变得愈来愈大。
- The cassette player is an optional extra in this make of car. 这种型号汽车如需盒式磁带唱机费用另计。
- Both New York and London have traffic problems. 纽约和伦敦都存在交通问题。
- My bet is they've got held up in the traffic. 我想他们一定是在路上因交通拥挤而受阻了。
- His left knee was hurt in a traffic accident. 他的左膝在一次交通事故中受伤了。
- His nerves were frayed by the noise of traffic. 他被交通噪音弄得神经紧张。
- You must do it; you have little option. 你必须做,你没有选择的余地。
- His car was stalled in a traffic jam. 他的车子在交通阻塞中动弹不得。
- It is at your option to stay or leave. 去留随你的便。
- You must do it; you have no option. 你必须做，你没有选择的余地。
