甲烷是一种无色无味的气体,大家都知道这是一种天然气。
An odorless, colorless, tasteless gas that you know as natural gas.
这种无色无味的气体如果长期大量地泄露,将是杀人不眨眼的恶魔。
The odourless, colourless gas is deadly if there is high or prolonged exposure.
这种无色无味的气体如果长期大量地泄露,将是杀人不眨眼的恶魔。
The odourless, colourless gas is deadly if there is high or prolonged exposure.
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