英语词汇“optional duty”的翻译、意思、用法、释义-英汉双解词典-注文网

单词	optional duty
释义	optional duty 选择税
随便看	valve checker valve chest valve-chest valve chest bushing valve chest end bushing valve chest gasket valve chest gland valve chest middle bushing valve circle valve circuit valve clack valve clatter valve-clearance valve clearance valve clearance adjuster valve clearance adjustment valve clear diameter valve closet valve-closing valve-closing retard valve closing spring valve-closing time valve closure valvecock valve-cock gntd gnxx gnzt go gong gongfen gongli gou gpbt gpdf 平板车平槽平正平步青云平殄平民平民主义平水平治平泛