Domain

區域 /区域

qūyù

((mathematics) an open and connected set)

域

yù

((taxonomy) highest-level grouping of organisms)

域名

yùmíng

(DNS domain name)

定義域 /定义域

dìngyìyù

((mathematics) the set on which a function is defined)

領域 /领域

lǐngyù

(a field or sphere of activity, influence or expertise)