elastic - Can be stretched., flexible - can be bent, rigid - cannot be stretched or bent, rough - uneven, irregular surface, smooth - even, regular surface, colorful - full of color, transparent - allows seeing through, opaque - does not let see through, solid - firm and stable in shape, liquid - flows freely, gas - expands freely,

Matter, States & Properties of Matter

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?