题目内容
n. help or advice that is given to sb, especially by sb older or with more experience
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adj. usual or typical of sb/sth; (of a person) doing sth that has become a habit and is therefore difficult to stop
adj. lacking knowledge or information about sth; not educated
v. to separate sb/sth physically or socially from other people or things
n. an instrument for measuring the amount or level of sth; v. to measure sth accurately using a special instrument
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