点击下方单词,选择对的这个单词
点击下面链接下载与本句相关的学习资源，包括PDF教材和音频练习，方便课后复习：
1. 知情人;了解内幕者;消息灵通人士An insider is someone who is involved in a situation and who knows more about it than other people.
1. an officer of a corporation or others who have access to private information about the corporation's operations
形容词inside
名词outsider
多通过句子记忆单词，而不是单独死记硬背。
