这张老照片已经褪色，呈现出一种怀旧的深褐色。

The old photograph has faded to a nostalgic ___sepia tone.

这位艺术家用深褐色墨水勾勒出优雅的线条。

The artist used ___sepia ink to outline elegant strokes.

这张褪色的老照片呈现出典型的棕色色调。

The old faded photograph has a typical ___sepia tone.