n.紅土；代赭石

v.用紅土做記號；涂紅土

Teacher:Boys,I have a ruddle for you.It has a beautiful feather,and it can wake you up every morning.What is it,Tom? （中文翻譯：老師：“男孩們，我有一個謎語給你們猜：它有漂亮的羽毛，并且它可以在每天早上叫醒你。它是什么，湯姆？”

Discussion of Best Ways of Processing Ruddle 中藥代赭石最佳炮制方法探討

Study on the Extraction Method of Angelica, Ruddle, etc. Of Zhepujiuweirunzao Tang 赭樸九味潤燥湯中的當歸代赭石等的提取工藝研究

1.Teacher:Boys,I have a ruddle for you.It has a beautiful feather,and it can wake you up every morning.What is it,Tom? （中文翻譯：老師：“男孩們，我有一個謎語給你們猜：它有漂亮的羽毛，并且它可以在每天早上叫醒你。它是什么，湯姆？”

ruddle sheep. 用代赭石給羊涂標記