今天我们要学的词是 little-known。Little-known 很少有人知道的。Federal investigators in Northern California routinely used a little-known surveillance tool to get data on and track criminal suspects. 北加州联邦调查人员常常使用一种很少为人所知的侦察工具来搜集数据，追踪犯罪嫌疑人。The head of the Syrian opposition's new interim government is a Syrian-born American who is little-known inside the country. 叙利亚反对派临时政府新领导人是在叙利亚出生的美国人，叙利亚国内知道他的人不多。It is a little known fact that Yang Lin has a tattoo of a flower on her right hip. 好的，今天我们学习的词是 little-known, little-known, little-known...