substance

柯林斯词典

1. N-COUNT A substance is a solid, powder, liquid, or gas with particular properties. 物質
There's absolutely no regulation of cigarettes to make sure that they don't include poisonous substances. 絕對沒有確保香菸不含有毒物質的槼定。
2. N-UNCOUNT Substance is the quality of being important or significant. 實質[正式]
It's questionable whether anything of substance has been achieved. 是否已取得任何實質性的進展值得質疑。
3. N-SING The substance of what someone says or writes is the main thing that they are trying to say. 要旨
The substance of his discussions doesn't really matter. 他討論的要旨實際竝不重要。
4. N-UNCOUNT If you say that something has no substance, you mean that it is not true. 正確性[正式]
There is no substance in any of these allegations. 這些指控沒有一個是正確的。

a natural substance
This substance is so radioactive that it glows in the dark .
This substance stretches to any shape you want .
Rubber is a flexible substance.
Two days after he'd been exposed to the substance, a painful rash erupted on his neck .