Definition

• n. a particular type of solid, liquid, or gas material
• n. the most important or basic part of something

Example

Scientists tested the unknown substance found in the water.

科学家们检测了在水中发现的那种未知物质。

Word familysubstan-

adj.

substantialL3substantiveL5insubstantialL6

adv.

substantiallyL4substantivelyL6