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A deficit is the hole when you have less than you need. The most common use is money: a government or a company spends more than it takes in, and that year’s hole is a deficit.
A deficit一個deficit is the hole when you have less than you need是當你擁有的比你需要的少時，那個缺口。The most common use最常見的用法 is money是在講錢：a government or a company spends more than it takes in一個政府或公司花得比賺得多，and that year's hole而那一年的缺口 is a deficit就是一個deficit
Sports people use it the same way — a team losing 2–0 has a two-goal deficit. Doctors use it when a part of the body or the mind is weaker than it should be, for example after a stroke.
Sports people運動界的人 use it the same way也是用同樣的方式──a team losing 2–0一支輸2比0的隊伍 has a two-goal deficit有兩球的落後。Doctors醫生 use it when a part of the body or the mind is weaker than it should be在身體或心智某部分比應有的狀態虛弱時會用這個詞，for example after a stroke比如中風之後
It is a fairly careful, news-and-school word. At the dinner table you would more often say we are short or we are in the red.
It它 is a fairly careful, news-and-school word算是一個滿嚴謹的新聞、學校用詞。At the dinner table在餐桌上 you would more often say we are short or we are in the red你比較常會說we are short或we are in the red
People also stretch it in a fancy way: a deficit of trust means there is not enough trust. The tidy picture is always the same: what you have, set against a higher amount you needed.
People人們 also stretch it in a fancy way也會把它用得比較花俏：a deficit of trust「a deficit of trust」 means there is not enough trust意思是信任不夠。The tidy picture整齊的畫面 is always the same永遠都一樣：what you have, set against a higher amount you needed你擁有的東西，對比你原本需要的更高數量
組成From French déficit, from Latin dēficit（「不夠了」）。和 defect 同源。
同家族的字
- defectshares the Latin root about something missing or going wrong
- deficientnot having enough of something
- deficiencythe state of not having enough
原始詞典資料2 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
deficitnoun/ˈdɛfɪsɪt/
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Deficiency in amount or quality; a falling short; lack.
- The crop output this year has been comparatively small, owing to the deficit in rainfall.
- 2
A situation wherein, or amount whereby, spending exceeds (e.g. government) revenue.
- Dr. Beeching's obvious intent is that if Scottish—and similarly unprofitable English and Welsh—railways are to be maintained, it must be done by an unconcealed subsidy; he is determined that the railways shall no longer be preoccupied with—and derided for—immense deficits which include the burden of social services the State must openly underwrite, if it wants them.
- But Wall Street, which has a case of deficit-attention disorder, is no longer focused on a balanced budget. "The bond market only worries about one thing at [a time.]
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。