<正>They have sharp(敏锐的)eyes. They are wise(聪明的). They are good at collecting clues(收集线索). They are the policemen’s good helpers. Yes, they are detectives(侦探). Aren’t they cool? Let’s meet some famous(出名的)detectives together.
科研之友
微信
新浪微博
Facebook
分享链接
