pioneer 名词复数:pioneers 过去式:pioneered 过去分词:pioneered 现在进行时:pioneering 词形变化: 动词过去式: pioneered | 动词过去分词: pioneered | 动词现在分词: pioneering | 动词第三人称单数: pioneers | 词义辨析: 同义: n.开拓者; 移居者 settler leader colonist forerunner 同义参见: inventor initiate1