本期内容：

Iceland unveiled a plaque to commemorate Okjokull, the first of the country's hundreds of glaciers to melt away due to climate change. What once was glacier has been reduced to a small patch of ice atop a volcano. Scientists see the shrinking of glaciers as one of many warning signs that the earth's climate is lurching toward dangerous tipping points.

unveil vt. 为……揭牌；推出，发布
· The news that Huawei unveiled its harmonyOS system inspired all of us.
华为发布鸿蒙操作系统的新闻鼓舞了我们所有人。
plaque n. 牌匾，匾额
· unveiled a plaque: 揭牌
· The president unveiled a plaque to mark the opening of this hospital.
总统为这家医院揭牌标志着它的正式启用。
commemorate vt. 纪念
· This monument was built to commemorate the heroes who died in the war.
这个纪念碑是为了纪念那些在战争中牺牲的英雄而建的。
glacier n. 冰川
melt away: 融化并消失掉；人群渐渐散去
· Crowds of fans began to melt away after the concert.
演唱会结束之后，成群的歌迷渐渐散去。
be reduced to: 被沦为……
· He was reduced to extreme poverty.
他沦为赤贫的状态。
· what once was… has been reduced to…: 一时风光的……被沦为……
patch n. 补丁；一小块儿
atop a volcano: 一座火山的顶端
· atop: 在……顶端，在……顶上（on top of）
· atop a mountain/tree: 在山顶/树顶
lurch toward: 向某个不好的方向突然倾斜
tipping point: 临界点，临爆点
· The puic mood has reached to a tipping point.
公众的情绪到了一触即发的境地。

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