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at    音標拼音: ['æt]
prep.
在…;在…時;在…中;在…方面;針對著;以;從事于;因為,由于

在…;在…時;在…中;在…方面;針對著;以;從事於;因為,由於

at
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at


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 Laos

At \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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