英汉例句双语例句"The mice increase numbers of both the black-legged tick vector and the pathogen that causes Lyme disease," Ostfeld said.然而在被人为改变的生态环境中，白足鼠大量繁殖，与其一起带来的还有携带莱姆病的黑腿壁虱。black-legged tick更多例句