It is not complicated, but it takes time on board on board.

這並不複雜，但需要花時間上船。

Yeah, you have to.

是的，你必須這樣做。

You have to be patient to get it finished and turning.

你必須要有耐心，才能把它完成並轉動。

But as it is first time and interesting to do so together with my grandson, it took some four or five hours, and, uh then the will start to turn.

但由於是第一次和孫子一起做，也很有意思，花了四五個小時，然後，呃，就開始轉意志了。