redbreastWiktionary 原文构词拆分red词根/词干+breast词根/词干演变路径（由近及远）英语继承自 ←中古英语 redbreste词源说明From Middle English redbreste, equivalent to red + breast.释义（英文）名词 NounAny of several unrelated birds that have a red breast.词族派生词（1）robin redbreast