He would use tracing paper to allow him to create multiple images from the same drawing.

他会用描纸将同一幅画绘制成多。

You know it's your flatmate's turn to buy the toilet roll when they get the cheapest, nastiest, budget toilet roll that can be used as tracing paper.

知道该轮到的室友买厕纸，他们会买最便宜、最粗糙、预算纸一样的厕纸，那玩意儿都能当描纸用。

Tracing paper, toilet roll is a liberty.

描纸、厕纸，这简直是放肆。

You know it's your flatmate's turn to buy the toilet roll when they get the cheapest, nastiest, budget toilet roll that could be used as tracing paper.

知道该轮到室友买厕纸的时候，他们会买最便宜、最粗糙、预算纸一样的厕纸，那东西简直可以当描纸用。