1.extent

n.

[definition]:范圍、面積；廣度、長(zhǎng)度；程度

[example]:to some extent在某種程度上

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2.evacuate

v.

[definition]:疏散、疏離、撤離

[example]:evacuate the building.

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3.embankment

n.

[definition]:筑堤、堤岸、路基

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4.federation

n.

[definition]:聯(lián)邦、同盟

[example]:a study by the eurpean federation for transport found that car transport is seven tiems as costly as rail travel.

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5.surge

v.

[definition]:（人群等）蜂擁而出；波動(dòng)、涌動(dòng)

[example]:magma had surged into the volcano from the earth's mantle巖漿從地幔流出，涌入火山.

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回顧：1.extent 2.evacuate 3.embankment 4.federation 5.surge