at
音標(biāo)發(fā)音
- 英式音標(biāo) [?t; ?t]
- 美式音標(biāo) [?t,?t]
- 英式發(fā)音
- 美式發(fā)音
基本解釋
- prep. 在（表示存在或出現(xiàn)的地點(diǎn)、場(chǎng)所、位置、空間）；在……歲時(shí)；在……遠(yuǎn)；以（某種價(jià)格、速度等）；向，朝；處于……狀態(tài)；處于最佳（或最差等）狀態(tài)；達(dá)；因?yàn)?；在……方面；響?yīng)；忙于；（武器）瞄準(zhǔn)；用，以；（抓）??；從事于；沖 (某人……)
- n. 阿特（老撾貨幣基本單位 att）；砹（極不穩(wěn)定放射性元素）
- abbr. 密封的 (airtight)；大氣 (atmosphere)；原子的 (atomic)；氣溫 (air temperature)
詞源解說(shuō)
- 直接源自古英語(yǔ)的at；最初源自原始印歐語(yǔ)的ad，意為靠近，在……附近。
用法辨析
- in與at的比較：用于地方時(shí)，at指較小的地方，如指城鎮(zhèn)時(shí)，in指較大的地方，用于省、國(guó)家、大陸前。國(guó)際大都市前用at 和in都有，但在London前通常用in。在指說(shuō)話人的住處時(shí)要用in，且一般in表示實(shí)在的存在，而at卻不是。說(shuō)到某大城市的某大建筑物，往往在大城市名稱的前面用at，如the Pantheon at Rome。說(shuō)到商店、機(jī)關(guān)、學(xué)校等，假使看作一個(gè)地點(diǎn)（point)用at。假使看作一個(gè)場(chǎng)所(place)用in，the barber's (理發(fā)店），Green's (Green所開的店）等前面只用at，不用in。說(shuō)到門牌用at，如live at 1184 Zhongshan Road，路名前面該用in，而說(shuō)“在……路口”用at；
- 用于時(shí)間時(shí)，可表示時(shí)刻，如at night，at three o'clock，at dawn，at any time等。也可表示較短的時(shí)期，如at night，at the beginning of the month等，其中at night表示時(shí)刻時(shí)意為“在薄暮”，表示較短的時(shí)期時(shí)意為"在夜里"，通常指黃昏或上半夜；
- at用于信封地址前可指“轉(zhuǎn)交”。Mike at 99 Zhongshan Road Shanghai. Mike經(jīng)常不在上海中山路99號(hào)，請(qǐng)予以轉(zhuǎn)交。
- at用于一些動(dòng)詞后面表示某種情緒、非語(yǔ)言交流或攻擊性行為，如smile at me，point at me，shout at you等；
- arrive后面一般都接in或at，而不接to，如When did you arrive in New Zealand?而不是to New Zealand；
- at five years old和at five miles distant里用at，可改作at five years of age或at the age of five years和at five miles' distance，這種用法較為普遍。
詞組短語(yǔ)
- arrive at 到達(dá)
- assist at 參與
- bark at the moon 空嚷
- bay at the moon 不斷無(wú)謂地抱怨
- be at sb 's door （責(zé)任等）歸于某人；（某事）是某人的責(zé)任
用作介詞 (prep.)
動(dòng)詞+～
英英字典
- (PLACE) used to show an exact position or particular place
- (TIME) used to show an exact or a particular time
- (DIRECTION) in the direction of
- (CAUSE) used to show the cause of something, especially a feeling
- (ACTIVITY) used to show the activity in which someone's ability is being judged
- (EMAIL ADDRESS) the @ symbol that joins the name of a person or a department in an organization to a domain name to make an email address
- (AMOUNT) used to show a price, temperature, rate, speed, etc.
- (CONDITION) used to show a state, condition, or continuous activity
- You use at to indicate the place or event where something happens or is situated.
- If you are at something such as a table, a door, or someone's side, you are next to it or them.
- When you are describing where someone or something is, you can say that they are at a certain distance. You can also say that one thing is at an angle in relation to another thing.
- If something happens at a particular time, that is the time when it happens or begins to happen.
- If you do something at a particular age, you do it when you are that age.
- If someone is at a particular school or college, they go there regularly to study.
- You use at to express a rate, frequency, level, or price.
- You use at before a number or amount to indicate a measurement.
- If you look at someone or something, you look toward them. If you direct an object or a comment at someone, you direct it toward them.
- You can use at after verbs such as "smile" or "wave" and before nouns referring to people to indicate that you have put on an expression or made a gesture that someone is meant to see or understand.
- If you point or gesture at something, you move your arm or head in its direction so that it will be noticed by someone you are with.
- If you are working at something, you are dealing with it. If you are aiming at something, you are trying to achieve it.
- If something is done at someone's invitation or request, it is done as a result of it.
- You use at to say that someone or something is in a particular state or condition.
- You use at before a possessive pronoun and a superlative adjective to say that someone or something has more of a particular quality than at any other time.
- You use at to say how something is being done.
- You use at to show that someone is doing something repeatedly.
- You use at to indicate an activity or task when saying how well someone does it.
- You use at to indicate what someone is reacting to.
- a Laotian monetary unit worth one hundredth of a kip 1001
- Austria
- at all&rarrsee all
劍橋英英字典
柯林斯英英字典
專業(yè)釋義
- 單價(jià)
- 異步傳輸 (asynchronous transmission)
- 異步傳輸法
- 非同步傳輸 (asynchronous transmission)
- 安匝
- 安
- 業(yè)馀電臺(tái)
- 驗(yàn)收測(cè)試 (acceptance test)
- 存取時(shí)間 (access time)
- 會(huì)計(jì)制表 (accounting tabulating)
- 交叉磁帶 (across tape)
- 作用時(shí)間 (action time)
- 加法器樹 (adder tree)
- 位址轉(zhuǎn)譯器 (address translator)
- 位址翻譯器
- 先進(jìn)技術(shù) (advanced technology)
- 權(quán)限表 (authority table)
- 安培匝 (ampere turn)
- 異常傳輸 (anomalous transmission)
- 自動(dòng)電話 (automatic telephone)
- 自動(dòng)訂票 (automatic ticketing)
- 自動(dòng)打字機(jī) (automatic typewriter)
- 輔助計(jì)時(shí)器 (auxiliary timer)
- 共濟(jì)失調(diào)毛細(xì)血管擴(kuò)張癥 (ataxia telangiectasia)