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at 音标拼音: ['æt] prep.
在…;在…时;在…中;在…方面;针对着;以;从事于;因为,由于 在…;在…时;在…中;在…方面;针对着;以;从事於;因为,由於 at查表 at在 At n 1: a highly unstable radioactive element ( the heaviest of the halogen series); a decay product of uranium and thorium [ synonym: { astatine}, { At}, { atomic number 85}] 2: 100 at equal 1 kip in LaosAt \ At\, prep. [ AS. [ ae] t; akin to OHG. az, Goth., OS., & Icel. at, Sw. [* a] t, Dan. & L. ad.] Primarily, this word expresses the relations of presence, nearness in place or time, or direction toward; as, at the ninth hour; at the house; to aim at a mark. It is less definite than in or on; at the house may be in or near the house. From this original import are derived all the various uses of at. It expresses: [ 1913 Webster] 1. A relation of proximity to, or of presence in or on, something; as, at the door; at your shop; at home; at school; at hand; at sea and on land. [ 1913 Webster] 2. The relation of some state or condition; as, at war; at peace; at ease; at your service; at fault; at liberty; at risk; at disadvantage. [ 1913 Webster] 3. The relation of some employment or action; occupied with; as, at engraving; at husbandry; at play; at work; at meat ( eating); except at puns. [ 1913 Webster] 4. The relation of a point or position in a series, or of degree, rate, or value; as, with the thermometer at 80[ deg]; goods sold at a cheap price; a country estimated at 10, 000 square miles; life is short at the longest. [ 1913 Webster] 5. The relations of time, age, or order; as, at ten o' clock; at twenty- one; at once; at first. [ 1913 Webster] 6. The relations of source, occasion, reason, consequence, or effect; as, at the sight; at this news; merry at anything; at this declaration; at his command; to demand, require, receive, deserve, endure at your hands. [ 1913 Webster] 7. Relation of direction toward an object or end; as, look at it; to point at one; to aim at a mark; to throw, strike, shoot, wink, mock, laugh at any one. [ 1913 Webster] { At all}, { At home}, { At large}, { At last}, { At length}, { At once}, etc. See under { All}, { Home}, { Large}, { Last} ( phrase and syn.), { Length}, { Once}, etc. { At it}, busily or actively engaged. { At least}. See { Least} and { However}. { At one}. See { At one}, in the Vocabulary. [ 1913 Webster] Syn: { In}, { At}. Usage: When reference to the interior of any place is made prominent in is used. It is used before the names of countries and cities ( esp. large cities); as, we live in America, in New York, in the South. At is commonly employed before names of houses, institutions, villages, and small places; as, Milton was educated at Christ' s College; money taken in at the Customhouse; I saw him at the jeweler' s; we live at Beachville. At may be used before the name of a city when it is regarded as a mere point of locality. " An English king was crowned at Paris." -- Macaulay. " Jean Jacques Rousseau was born at Geneva, June, 28, 1712." -- J. Morley. In regard to time, we say at the hour, on the day, in the year; as, at 9 o' clock, on the morning of July 5th, in the year 1775. [ 1913 Webster] |
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