English as a second or foreign language 以英语为第二语言或外语
(重定向自English language teaching and learning)
English as a second or foreign language is the use of English by speakers with different native languages. Instruction for English-language learners may be known as English as a second language (ESL), English as a foreign language (EFL), English as an additional language (EAL), or English for speakers of other languages (ESOL).