值得一學的是「指標、指數」的index,例如世界聞名的「道瓊工業指數」是Dow Jones Industrial Average Index。想要記住index不難,因為index是從indicate而來,它有「表示、顯示、指出」之意。它的名詞也不妨順便一記,是indication。
index (n.) 指數
The house price index fell 10 percent this month.(房價指數這個月下降了10%。)
indicate (v.) 表示、顯示、指出
The study indicates a connection between jobless rate and economy development.(這項研究顯示失業率與經濟發展有關聯性。)
indication (n.)
Take a dictionary along with you is a clear indication that you are diligent.(隨身攜帶字典,這表明你很用功。)
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