相关单词近义词 black catechu 黑儿茶, Acacia catechu 儿茶, Jerusalem thorn 扁叶轴木临近词Catel, cate, catenating ague, Catechu extract, categorial rule, catenary action, catenary ripple, catenated dimer, catenary system, catenary theory, catenarian arch, catechol tannin 返回 catechu