YOU SAID:

china is number 1 in the world

INTO JAPANESE

中国は世界で1位です

BACK INTO ENGLISH

China is number one in the world

INTO JAPANESE

中国は世界一です

BACK INTO ENGLISH

China is the world's best

INTO JAPANESE

中国は世界最高です

BACK INTO ENGLISH

China is the best in the world

INTO JAPANESE

中国は世界で最高です

BACK INTO ENGLISH

China is the best in the world