In the absence of a competitor,a species may expand its niche,Examples of such competitive release include ground doves in New Guinea and gerbils in Israel.是什么意思_In the absence of a competitor,a species may expand its niche,Examples of such competitive release include ground doves in New Guinea and gerbils in Israel.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句