have specialized knowledge of a subject
have sth in mind中文是什么意思
have sth on one's conscience中文是什么意思
have sth to do with中文是什么意思
have sth up one's sleeve中文是什么意思
have studied中文是什么意思
英语词典收录了最新的汉英词典和英汉词典，总共有200多万个词条，词库仍在不断更新中。
