煤是生產(chǎn)鋼鐵的關(guān)鍵原料我們每天接觸和使用的幾乎所有東西，從手機(jī)和平板電腦，到冰箱和爐具，都使用了鋼材。

Coal is a key ingredient in the production of steel

Steel goes into almost everything we touch and use every day, from cell phones and tablets, to fridges and stoves.