我用直尺在纸上画了一条直线。

I drew a straight line on the paper using a ___straight-edge.

尽管乐队其他成员都喝酒，但她一直坚持straight-edge的生活方式。

While the rest of the band drank, she maintained her ___straight-edge lifestyle.

她用直尺确保纸张的边缘完全笔直。

She used a ___straight-edge ruler to make sure the paper had perfectly straight edges.