The carpenter grooved the board .

木匠在木板上开槽。

The upper jaw is deeply grooved .

上颚上有道深深的凹槽。

Scientists showed how balls placed in grooved wooden tracks would have allowed the easy movement of stones weighing many tons .

科学家们展示了如何将球放在木质的轨道槽内，然后将重达数吨的石头轻易移动起来。

There was a grooved pattern in the wood .

这块木头上有沟状的花纹。

The good news is that eventually it will be grooved and you won 't have to think about it .

好消息是最后它终将是凹陷进去记忆深处，而且你不必要再思索它。