A planer is a machine, or blade that planes - or makes wood smooth.

床是一种机器刀片，可以木材光滑。

23. In the lane the planer saw a planet airplane under the crane.

在巷道里，工看见了重机下的行星飞机。

And we use a grinder with a rotary planer head on it to shave, say, four or five mill out of the inside of that barrel so that we expose all the fresh oak flavours.

用带有旋转头的研磨机从桶的内部削去四到五个磨头，这样就能暴露出所有新鲜的橡木味。