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。
- It may take a long time to find a solution to the problem. 也许要花很长时间才能找到解决这个问题的办法。
- An optional academic course or subject. 选修的科目选修课程或课题
- I simply refuse to conceive of such a solution. 这样的解决办法，我是绝对不考虑的。
- 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。
- What color is copper sulphate solution? 硫酸铜溶液是什么颜色？
- Mary is sceptical about the solution. 玛丽对这个解决办法表示怀疑。
- His problem did not really admit of any solution. 他的问题真是没有解决的可能。
- He doped out a solution to the problem. 他想出一个解决该问题的方法。
- You must do it; you have little option. 你必须做,你没有选择的余地。
- It is at your option to stay or leave. 去留随你的便。
- The solution to this problem is acceptable. 这个问题的解决方案是可接受的。
- You must do it; you have no option. 你必须做，你没有选择的余地。
- She has come to some most satisfactory solution. 她得到一个非常使人满意的解决方法。
- She has taken an option on that piece of land. 她已取得那块土地的购置权。
- The solution of sugar was boiling down. 糖水煎浓成为糖浆。
- Permitting discretion; optional. 允许自行处理的; 随意的
- The former option favours the married man. 前一种选择对已婚男子有利。
- What color is copper sulfate solution? 硫酸铜溶液是什么颜色？
