Zhè / wèi / lǎo / yì / rén / de / jué / yì / shì / yòng / yì / bǎ / xiǎo / dāo / diāo / kè / hé / táo这位老艺人的绝艺是用一把小刀雕刻核桃。This old artisan's exceptional skill is carving walnuts with a small knife.