孩子们喜欢一起拼这幅500片的拼图。

The kids enjoyed assembling the 500-piece ___jigsaw together.

我用电动线锯给木板切割出了一个漂亮的波浪形边缘。

I used a ___jigsaw to cut a beautiful wavy edge on the wooden board.

这个项目像拼图一样，需要把所有小部分整合起来才能完成。

This project is like a ___jigsaw, requiring all the small parts to be put together to complete it.