4月10日，一张遥远银河上黑洞的照片成为科学史上的一座里程碑。
A landmark in the history of science was made by a photo which was taken on April 10th about the black hole in a faraway galaxy.
它(人类基因组计划)是国际科学合作所承担的最大型的项目之一，并最终取得了具有里程碑意义的成就。
It WAS one of the largest international scientific collaborations ever undertaken and it led, eventually, to a landmark accomplishment.
普渡大学的科学家，斯蒂芬说德宾在《自然物理学杂志》的一篇关于钻石镜的附加文章中说：“这是此种类型的激光研究的重大里程碑。”
"This is a huge milestone in this type of laser research," said Stephen Durbin, a scientist at Purdue University, in an accompanying article in the journal Nature Physics about the diamond mirror.
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