o开头的形容词褒义

optimistic 乐观的；

obedient 孝顺的；

opportune 恰好的；

ornate 华丽的；

outstanding 杰出的；

obvious 显著的；

obstinate 顽强的；

original 原始的

例句

He is an optimistic young fellow.

他是位乐观的年轻人。

He was always optimistic, even when things were at their worst.

他即使在情况最糟糕的时候也总是很乐观。

He was always obedient to his father\'s wishes.

他一向顺从父亲的意愿。

He was very respectful at home and obedient to his parents

他在家里对父母十分恭敬顺从。

The timing of the meetings was opportune.

会议的时间安排得恰到好处。