本期内容：

Fifty years ago today, the first Earth Day was marked in the United States as a peaceful call for environmental reform, following a massive oil spill off the coast of California.
Half a century later, this annual day unites millions across the globe, drawing attention to the huge challenges facing our planet.
Now more than ever, Earth Day offers an opportunity for us all to reflect upon our relationship with the planet, amid the most powerful possible message that nature can surprise us at any moment, with devastating consequences for pretty much every individual.


call n. 呼吁（appeal）
spill v. 溢出
• spill-over effect: 溢出效应

unite vt. 团结
draw attention to: 使……关注

more than ever: 更胜从前
• I love you more than ever.
我比以往任何时候都爱你。
reflect upon/on: 反思
• Time to reflect on our successes and failures.
是时候总结成败得失了。
at any moment: 随时
devastating consequences: 毁灭性的后果
pretty much: 几乎



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