您要查找的是不是：
- The required or optional nature of a piece of data. 一段数据天生具有的必需或是可选的属性。
- It's only human nature to want a comfortable life. 想过舒适的生活不过是普通人的本性。
- 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。
- All nature seemed pregnant with life. 整个大自然似乎充满了活力。
- He knows nothing of the nature of my work. 他一点也不了解我的工作性质。
- An optional academic course or subject. 选修的科目选修课程或课题
- The girl is of a confiding nature. 这女孩具有轻信别人的性格。
- We enjoyed the beauty of nature. 我们欣赏大自然的美。
- 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。
- Perhaps it is our human nature to be nostalgic. 也许是人类天生有一种思古之幽情。
- She had an eye for the beauty of nature. 她有鉴赏自然美的眼力。
- She hasn't much feeling for the beauty of nature. 她对大自然的美缺少鉴赏力。
- Her sad looks reflected the nature of her thoughts. 她面带忧伤显出心事重重。
- You must do it; you have little option. 你必须做,你没有选择的余地。
- It is one of the strangest things in nature. 那可真是奇怪的东西之一。
- 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。
- Nature seems to be wakened from a deep sleep. 大自然好像从沉睡中被唤醒。
- She has taken an option on that piece of land. 她已取得那块土地的购置权。
