你要是想买辆新车的话，现在正是时候。

If you're thinking of getting a new car, now is a good time to buy.

《牛津词典》

你来得正是时候。我刚想要给你打电话。

Your timing is perfect. I was just about to call you.

《牛津词典》

现在买房子正是时候。

Now is a good time to buy a house.

《牛津词典》

On the contrary, philosophy properly understood is what comes into being when one has achieved full recognition of a preexisting error.

相反，被适当地理解的哲学正是在,对前有的错误有了完整认知的时候所形成的。

耶鲁公开课 - 文学理论导论课程节选

And when we bought, it was at the height of the housing bubble,

我们买房子的时候，正是房地产泡沫的最高峰，

金融危机 - SpeakingMax英语口语达人

It's in the period in which Milton is writing that the tide is beginning to turn.

弥尔顿写作的时候,正是那种趋势在转变的时候。

耶鲁公开课 - 弥尔顿课程节选