当岩浆一次又一次地在同一地点从地下涌出时，就形成了盾状火山。

Shield volcanoes formed when magma comes out of the ground in the same spot over and over again.

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仅2018年这一年，山火、火山爆发、飓风、泥石流和其他自然灾害就给美国造成了至少490亿美元的损失。

In 2018 alone, wildfires, volcanic eruptions, hurricanes, mudslides, and other natural disasters cost at least $49 billion in the United States.

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熔岩堆积，变硬，于是火山就形成了。

The lava builds up, and hardens, and a volcano forms.

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It's like a moveable feast; you put your explosion where you need it at any particular moment.

它就像一个万能贴,你可以把火山爆发,置于你所需要的特定时刻

耶鲁公开课 - 古希腊历史简介课程节选

You have, like lava emerging from a volcano, a rupture.

相反，就像岩浆从火山喷出一样，突然爆发。

耶鲁公开课 - 文学理论导论课程节选