have a good nose[嗅觉敏锐]
-eg: A good reporter must have a good nose for news.;
objectively[客观地]
-eg: The real function of media is to reveal the world objetively.;
cover up[掩盖]
-eg: cover up the facts[掩盖事实真相] Vs. reveal the facts[揭露事实真相]