magnesium anode

例句：

1. 1. The magnesium in the salt reacts with water to form a gas.
   盐中的镁与水反应生成气体。
2. 2. Magnesium is an essential element for humans and plays a crucial role in energy production.
   镁是人类必需的元素，对能量生产至关重要。
3. 3. In the laboratory, magnesium can be used as a catalyst for chemical reactions.
   实验室中，镁可作为化学反应的催化剂。