zhè / fú / mù / tàn / huà / yòng / shēn / qiǎn / bù / yī / de / tiáo / xiàn / biǎo / xiàn / rén / wù

这幅木炭画用深浅不一的线条表现人物。

This charcoal drawing uses lines of varying shades to depict the figure.