5.說明定義
Google, broadly defined as the largest comprehensive search engine in the world, decided to withdraw from the Chinese mainland in 2010.
谷歌，被廣義定義為全球最大的綜合搜索引擎，2010年決定退出中國大陸市場。
Diabetes mellitus, defined as a metabolic disease series characterized by sharp increase of the level of glucose or sugar in blood caused by the defect of insulin secretion or the vitium of insulin functioning, has been a difficult problem in medical community for a long time.
糖尿病，被定義為由胰島素分泌缺陷及/或胰島素作用缺陷而引起的以血漿葡萄糖水平升高為特征的代謝性疾病群，多年來一直是醫學界的一個難題。
Semiotics, generally defined as the academic study of the relationship of language and other signs to their meanings, is becoming the new research hotspot in the linguistic field.
符號學，通常被定義為語言和其他符號與其意義的關系的學術研究，正在成為語言學界新的研究熱點。
Mixed school refers to the so-called co-educational school, which means both boys and girls are educated together.
男女混合學校指的是所謂的共同教育學校，指的是男生和女生在一起接受教育。
Etymology refers to the study of the origins and historical development of words, which means it is an inevitable part in lexicology study.
詞源學是指對詞匯起源和歷史發展的研究，這意味著詞源學是詞匯學研究中必不可少的部分。
“Blue blood”refers to the people who are from noble or extremely rich and powerful family, which means they are more distinguished than our normal people.
“藍血”指的是來自貴族或極富有和強大的家庭的人，這意味著他們比我們普通人更受人尊敬。