UNSYMadj.非对称的
unsadj.不对称的
unsymmetric catalysts不对称催化剂
unsubstantiated claim没有根据的要求
unstratified language非成层语言 非排元语言
unsaturated sandy silt非饱和淤泥土
unsecured over advance[经] 无担保超额预付款
unsaturated soil water非饱和土壤水
"trees with rough bark"
"rough ground"
"rough skin"
"rough blankets"
"his unsmooth face"