ca
ca — 名詞
1. a short written form for the US state of California, used in postal addresses an
加州
美國加州地址縮寫
a short written form for the US state of California, used in postal addresses and on forms after the name of a city.
Please send the form to 742 Maple Street, San Diego, CA 92101.
請將表格寄到聖地牙哥楓樹街742號，CA 92101。
postal address format: city, CA ZIP
Asher moved from Chicago to Los Angeles, CA, to join a film production company.
Asher 從芝加哥搬到加州洛杉磯，加入了一家電影製作公司。
The online form asked for her city and state, so she typed "San Francisco, CA."
線上表格要求填寫城市和州名，她輸入了「舊金山，CA」。
Benjamin's return address showed a small town in northern CA, about an hour from the coast.
Benjamin 的回信地址上顯示的是加州北部的一個小鎮，離海岸大約一小時車程。
When mailing documents to the Sacramento office, always put "CA" after the city name and before the ZIP code.
將文件郵寄到沙加緬度辦公室時，記得在城市名稱後加上「CA」，再寫郵遞區號。
- Calif.
An older written abbreviation; CA is now the standard USPS form.
用法筆記
Always written in capital letters without a period. This abbreviation is standard in US postal addresses and on official forms, but in general writing the full name 'California' is preferred.
常見錯誤
ca — 名詞
1. the chemical symbol for calcium, a soft silver-white metal that is an important
鈣
化學元素鈣的符號
the chemical symbol for calcium, a soft silver-white metal that is an important element for living things, shown on the periodic table with the atomic number 20.
The periodic table shows Ca between potassium and scandium.
元素週期表上，Ca 位於鉀和鈧之間。
position in periodic table
Aoi's lab report identified CaCO₃ as the main compound found in limestone.
Aoi 的實驗報告指出，石灰岩的主要成分是 CaCO₃。
Ca in chemical formulas
The nutrition label on the milk carton listed the calcium content as "Ca 300 mg" per serving.
牛奶盒上的營養標籤標示每份含鈣量為「Ca 300 mg」。
In the chemistry exam, students had to name the element represented by the symbol Ca.
化學考試中，學生必須說出符號 Ca 所代表的元素名稱。
Mateo learned that the human body needs Ca to build strong bones and teeth.
Mateo 學到人體需要 Ca 來建造強壯的骨骼和牙齒。
- calcium
The full name of the element; Ca is the written symbol used in formulas and tables.
用法筆記
The symbol is written with a capital C and a lowercase a (Ca). It is never written as all capitals (CA) or all lowercase (ca), which would be confused with the state abbreviation.