相关单词近義詞 lengthener 伸長器, extender 增量劑, stretcher 擔架, expander 擴充器, increaser 異逕接頭琯, enlarger 放大機臨近詞protract, protractor head, protracted test, protracted dose, protract a visit, protracted labor, protraction dose, protractor scale, protracted break, protracted effect, Protracted Nature相似詞prototype, prototypical, protozoan, protracted, protrude, protrusion, protuberance, protuberant, 返回 protractor