instruction:
Given a sentence in Korean, provide an equivalent paraphrased translation in English that retains the same meaning both through the translation and the paraphrase.
question:
세계 최초의 레이저는 미국 과학자 Nikolay Basov와 Alexander Prokhorov와 러시아 과학자 Charles H. Townes에 의해 1960 년에 개발되었습니다.
answer:
In 1960 , the world 's first laser was developed by American scientists Nikolay Basov and Alexander Prokhorov , and Russian scientist Charles H. Townes .


question:
여기서는 의사 미분 연산자를 미분 연산자의 일반화로 간주합니다.
answer:
We consider pseudo-differential operators here as a generalization of differential operators .


question:
Blauvelt 가족은 1638 년 Rockland 카운티에 처음 도착한 후 1683 년에 미국에 처음 도착했습니다.
answer:

The Blauvelt family arrived in Rockland County for the first time in 1638 and first arrived in America in 1683 .