Take “a laconic answer is a short answer” as an example to illustrate etymological motivation.
【正确答案】：1) The meaning of many words often relate directly to their origins. In other words,the history of the word explains the meaning of the word.2)The word "laconic" meaning "brief" or "short" is derived from Lacons, a tribe of people who were known for their "brevity of speech"and for their habit of never using more words than necessary. Hence "a laconic answer" is a short answer.
