China now ranks first in four major areas of scientific research in terms of academic activity and influence, trailing only the United States, which leads in seven, according to the report "Research Fronts 2020".
《2020研究前沿》报告显示，在学术活动及影响力层面，美国在七个领域排名第一，中国紧随其后，在四个领域全球领先。
This year, China leads the world in four major research categories: agricultural sciences, botany and zoology; chemistry and materials science; mathematics and information science. China also ranks second in ecology and environmental sciences; physics; social sciences including economics and psychology.
今年，中国在“农业科学、植物学和动物学”“化学与材料科学”“数学”“信息科学”4个领域全球领先；在“生态与环境科学”“物理学”以及“经济学”和“心理学”等社会科学领域排名第二。

However, China is notably behind other scientific powerhouses in clinical medicine and astronomy and astrophysics, ranking at 12th and 8th, respectively.
不过，中国在临床医学以及天文学与天体物理学方面与其他科技强国差距明显，分别排名第12名和第8名。