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Ca (calcium) as a subject
在化学语境中常用。
Ca is a chemical element.
钙是一种化学元素。
[医] 钙(20号元素); 阴极, 负极
CAS — plural of ca
先理解核心含义，再看它在真实句子里的用法。
[医] 钙(20号元素); 阴极, 负极
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
Ca is a chemical element.
钙是一种化学元素。
钙(20号元素); 阴极；负极
n 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；n a state in the western United States on the Pacific; the 3rd largest state; known for earthquakes
The doctor said my ca intake is too low, so I need to eat more dairy.
医生说我钙的摄入量太低了，所以我需要多吃点乳制品。
Green leafy vegetables are a good source of ca for people who don't drink milk.
对于不喝牛奶的人来说，绿叶蔬菜是钙的良好来源。
After the age of 50, it is important to monitor your ca levels to prevent osteoporosis.
50岁以后，监测你的钙水平以预防骨质疏松很重要。
在化学语境中常用。
Ca is a chemical element.
钙是一种化学元素。
CA是加利福尼亚州的邮政缩写。
San Francisco, CA 94102
旧金山，加利福尼亚州 94102
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
钙缺乏
A ca deficiency can lead to weak bones.
钙缺乏可能导致骨骼脆弱。
钙水平
The doctor checked her ca level.
医生检查了她的钙水平。
钙补充剂
She takes a ca supplement daily.
她每天服用钙补充剂。
加州海岸
The ca coast is beautiful.
加州海岸很漂亮。
加利福尼亚州
He lives in ca state.
他住在加利福尼亚州。
加州州长
The ca governor signed the bill.
加州州长签署了该法案。
Use CAS naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
Ca像'钙'的拼音首字母，也是California的缩写，记住钙片和加州阳光。
该词有两个常见义项：化学元素钙和加州缩写。多用于化学和地理语境，语气中性。通常大写CA指加州，小写ca指钙。
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.