Diamonds are among the most valuable jewels on our planet. They are formed under extreme conditions deep below the Earth’s surface through a great deal of heat and pressure. Historically, the diamond industry has caused many problems for the environment. The mines where diamonds come from can be very unpleasant for workers, and the process of mining diamonds can do a lot of damage to the surroundings. This is why many people are now looking to lab-grown diamonds as an alternative.
钻石是地球上最有价值的宝石之一。它们是在地球表面之下的深处，处于极端条件并经历大量的热能和压力形成的。在历史上，钻石产业对环境造成了许多问题。采钻的矿井对工人来说可能极为不适，开采钻石的过程也会对周遭环境造成很大的破坏。这就是为什么许多人现在视实验室培育钻石为替代品。
生活必备字词：
jewel n. 宝石（可数）
jewelry n. 珠宝（集合名词，不可数）
extreme a. 极端的
surface n. 表面
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本文节录自《常春藤生活英语》杂志，完整内容请见十月号。
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