C.A.
中文翻譯：
【醫】 頸軸的字典網
英文字典英文解釋：
名詞 c.a.:
- 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同義詞：calcium, Ca, atomic number 20
- a state in the western United States on the Pacific; the 3rd largest state; known for earthquakes同義詞：California, Golden State, CA, Calif.