Scientists at the Goddard Space Flight Center in Greenbelt,Maryland, found the substance glycine in material brought back to Earth from a comet.
VOA: special.2009.09.30
Some other kind... the body is a material substance.
而其他的一些东西...,比如肉体就是物质实体
The matter the substance the material basis of a regime concerns its citizen body.
本质,政体的物质基础,是其公民本体最关心的。
应用推荐