物质

• Atom number eight is called oxygen .
  原子序数为8的物质叫做氧。
• He was not interested in that materialist lure .
  他对这种物质引诱不感兴趣。
• All this took time, labor and material .
  所有这一切都需要时间、劳力和物质。
• The chemical destroys botulinus .
  该化学物质能消灭肉毒杆菌。
• Matter exists in three states : solid , liquid and gas .
  物质以三种形态存在：
• The creation of material particles requires energy .
  物质粒子的产生需要能量。
• Usually it is hard to get a simple substance .
  一般得到一种单纯的物质很困难。
• We live in two different physical worlds .
  我们是生活在两个不同的物质世界里。
• He obtained discrete bands of colour materials .
  他得到了各有色物质的判别谱带。
• Later, many similar substances come to light .
  后来，许多类似的物质逐渐清楚了。