The shelf is about a metre long—well, 98cm, to be precise.

架子长约一米。嗯，精确地说，是98厘米。

Sardines, to be precise.

准确地讲是沙丁鱼。

You need to be precise and informative.

你需要提供精确有效的信息。

Big rocks on top of other big rocks, to be precise.

确切地说，就是把大石头放到其它大石头上。

He had built a logic gate - to be precise, a NOR gate.

他等于建造了一个逻辑门-准确地讲是一个或非门。