substance
单词辨析：
尤指木材、石头、金属、塑料等用于制作某物的原材料；也可指文学创作的素材。
As a building material, wood is not sturdy enough.
作为一种建筑材料，木材不够结实。
Production has come to a halt owing to the lack of raw materials.
由于缺少原料，生产已陷入停顿。
He is now collecting material for a biography.
他正在为写一部传记收集素材。
一切有形物质的总称，既指构成宇宙万物的物质，也指哲学上与意识相对的物质。
The entire universe is made up of different kinds of matter.
整个宇宙是由各种物质构成的。
The lake is rich in organic matter.
该湖中有丰富的有机物质。
Matter is primary and mind is secondary.
物质是第一性的，精神是第二性的。
多用于日常口语，可指各种叫不出名称的物质、材料、物体等；有时指无关紧要的东西，含轻视意味。
There is some sticky stuff on my trousers.
我裤子上粘了些黏糊糊的东西。
Put all the stuff into the box and seal it tightly with sticky tape.
把所有的东西都放进盒子里，再用胶带封好。
Could you move all the stuff off the desk?
请你把桌子上的那些玩意儿全部清走行不行？
通常指有某种特性的固体、液体或气体物质。
Soil consists of various chemical substances.
土壤由各种化学物质组成。
Water, ice and steam are the same substance in different forms.
水、冰和蒸汽是形态不同的同一物质。
Police found an illegal substance in his briefcase.
警察在他的公文包里发现了违禁品。
相关例句：
'A passport to a brighter future': it sounds like a worn-out advertising slogan, but for once the cliche has substance.
“通往更加光明的未来的通行证”，这话听起来像句老掉牙的广告词，但这次这句套话却言之有物。
No substance at all, just froth
根本没有任何实质，只是一些虚浮的东西。
This substance degrades rapidly in the soil.
这种物质在土壤里会迅速降解。
Your immune system has been desensitized because it has become used to the substance.
你的免疫系统已经因习惯了这种物质而不再敏感。
The articles are long-winded and devoid of substance.
这些文章空话连篇。
This substance does not dissolve in water.
这种物质在水中不会溶解。