同根派生 英汉例句用作名词 (n.)To my knowledge, the Los Alamos laboratory has very tight security measures.据我所知，美国洛斯阿拉莫斯实验室里的保密措施十分严密。To my knowledge, the Los Alamos laboratory has very tight security measures.据我所知，美国洛斯阿拉莫斯实验室里的保密措施十分严密。