您要查找的是不是：
- The insurance cover is optional. 保险范围可以随意选择。
- A 4-speed automatic transmission is optional. 四段自动变速器是可自由选择的。
- An optional academic course or subject. 选修的科目选修课程或课题
- He showed us four case studies of disturbed girls. 他给我们看了4位精神失常姑娘的病历。
- He studies more diligently than his friend. 他比他的朋友更勤奋地学习。
- 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。
- He made rapid progress in his studies. 他学习上进步很快。
- He is a naturalist who studies animals and plants. 他是个研究动植物的博物学家。
- She studies three times as hard as I. 她用功的程度是我的三倍。
- You must do it; you have little option. 你必须做,你没有选择的余地。
- The warm weather seduced me away from my studies. 暖和的天气诱使我放下了学习。
- It is at your option to stay or leave. 去留随你的便。
- Their students are diligent about their studies. 他们的学生勤奋学习。
- You must do it; you have no option. 你必须做，你没有选择的余地。
- Some of them are engaged in advanced studies. 他们有些人在进行高级研究工作。
- She has taken an option on that piece of land. 她已取得那块土地的购置权。
- City planning and allied studies. 城市规划和相关研究。
- Permitting discretion; optional. 允许自行处理的; 随意的
- She is pursuing her studies at the university. 她在大学继续深造。
- The former option favours the married man. 前一种选择对已婚男子有利。
