tars

例句:

• Around 280 degrees C, Volatile gases and flammable tars are released.
  在大约摄氏280度, 挥发性的气体和可燃焦被放出.
  
• Tars could be seen walking towards the harbor.
  可以看到水手正在走向港口.
  
• Shiny tiny tars in our hands.
  指间的星砂徐徐坠下,温润明亮.
  
• Super critical carbon dioxide acts as a super solvent of petroleum and can liquify even tars like oils.
  来自SA
• There is a way to get rid of mercury and other heavy metal emissions, PM, tars and VOC, and AFCs.
  来自FORBES