noun 下载 🔗分享 源头,发源地 The source of a river, the set of streams that feed into the river's beginning. Examples : "The small stream high in the mountains is one of the Mississippi River's many headwaters. " 位于高山上的这条小溪是密西西比河众多源头之一。 geography environment nature 与AI对话词汇游戏阅读练习