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CA    音标拼音: [k'ʌ] [s'i'e] [k'ɑ]
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Ca
n 1: a white metallic element that burns with a brilliant light;
the fifth most abundant element in the earth's crust; an
important component of most plants and animals [synonym:
{calcium}, {Ca}, {atomic number 20}]
2: a state in the western United States on the Pacific; the 3rd
largest state; known for earthquakes [synonym: {California},
{Golden State}, {CA}, {Calif.}]

Ca \Ca\ n.
the chemical symbol for calcium, the fifth most abundant
element in the earth's crust, having an atomic number of 20.

Syn: calcium.
[WordNet 1.5]


circa \cir"ca\ (s[~e]r"k[.a]), adv., prep. [L.]
Approximately; about; commonly abbreviated {ca.}; -- used
especially before dates and numerical measures; as, he was
born circa 1650; ca. 50 feet high.

Syn: ca.
[PJC]

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