化學(xué)
Erode--Erosion
Rot
Decay
Decomposition
Rust
Limestone石灰石
Silicon硅
Crystal
Copper
Lead鉛
Mercury水銀
Nickle 鎳
Sodium鈉
Calcium鈣
Oxygen氧氣
Nitrogen氮
Gasoline
Petroleum
Hydrocarbon
Plastic
Molecule
Particle
Solution—solubility
Dissolve
Blend
Compound