natural science

名词 natural science:

1. the sciences involved in the study of the physical world and its phenomena

1. He devoted the first years of his student lift to mathematics then he studied the natural science; but finally returned to his first love.
   他头几年里致力于研究数学; 后来他又去研究自然科学; 但最后他又回过头来重操旧业，研究数学。