I'm cautiously optimistic.
我持謹慎的樂觀態度。
She is an obedient woman.
她是位溫順的女人。
A key resource to be used at an opportune moment.
王牌適當時刻所用的關鍵手段。
The offer could not have come at a more opportune moment.
那個建議提得正是時候。
Yes, and it can be as ornate as you want.
可以，盡你所想的豪華。