lǎo / shī / yòng / jiǎ / gǔ / wén / lái / shuō / míng / zǎo / qī / biǎo / yì / wén / zì / de / tè / diǎn老师用甲骨文来说明早期表意文字的特点。The teacher used oracle-bone script to explain the features of early ideographic writing.