a metal

• This rough track will soon be a metalled road
  这条坑坑洼洼的路不久就要铺上碎石了
• Aluminium is a metal which is produced from bauxite
  铝是一种从铝土矿提炼出的金属。
• A metal called uranium gave off a kind of radiation
  一种叫铀的金属会发出一种射线。
• I went to radio shack and bought a metal detector
  ，于是我只得回一条空荡荡的项? 。
• A safety pin has a metal covering over the pointed end
  安全别针在尖端有一个金属套。
• Add the solution to a metal pan of cool water
  再将混合的液体盛入装有冷水的金属锅中。
• The actual figure was supported by a metal framework
  这座雕像的主体由金属框架支撑着。
• Putting an acid and a metal together causes a reaction
  将酸和金属放在一起会引起反应。
• Putting an acid and a metal together causes a reaction
  把酸和金属放在一起变产生反应。
• Fit a metal grille or roller shutter for extra protection
  增设金属闸或卷闸，加强保安。