world language
noun
1- a language known or spoken in many countries（许多国家和地区使用的）世界语言：
English is now the world language.
英语现在是世界语了。
1.1
- an artificial language for international use世界语, 人造世界语：
there have been attempts to introduce a standard world language.
曾经人们想造出标准世界语。