substance [ˈsʌbstəns]

以下由轻松背单词网站提供

n.物质，实质，主旨

material with particular physical characteristics

There isn't anything of real substance in her book. 她的书中没有任何真正实质性的内容。
How long will the substance take to salt out? 这种物质需要多长时间来盐析？