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本期學(xué)習(xí)的字源：pon, pos, pound=place放置

Grand Canyon

EPA

Dwight Eisenhower

World Communism

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expose An entire geological history is exposed on the walls of the Grand Canyon. impose Some scholars believe that the EPA should impose an anti-noise tax on factories that cause noise pollution. compound This bank deposit has grown to several times its original value, thanks to compound interest. expound In the debate that follows, each candidate will be free to expound on his own views about tax reduction. propound American President Dwight Eisenhower propounded the domino theory in 1954, which became the basis for the policy of containment against World Communism.
An entire geological history is exposed on the walls of the Grand Canyon. 一整部地質(zhì)史在大峽谷壁上表露無(wú)遺。 Some scholars believe that the EPA should impose an anti-noise tax on factories that cause noise pollution. 一些學(xué)者認(rèn)為環(huán)保署應(yīng)當(dāng)對(duì)制造噪音污染的工廠征收反噪音稅。 This bank deposit has grown to several times its original value, thanks to compound interest. 這筆銀行存款由于復(fù)利的關(guān)系已經(jīng)增為本金的好幾倍。 In the debate that follows, each candidate will be free to expound on his own views about tax reduction. 在接下來(lái)的辯論中，各位候選人可以自由闡述個(gè)人對(duì)減稅的看法。 American President Dwight Eisenhower propounded the domino theory in 1954, which became the basis for the policy of containment against World Communism. 美國(guó)艾森豪威爾總統(tǒng)于1954年倡議骨牌理論，后來(lái)成為圍堵世界共產(chǎn)主義政策的基礎(chǔ)。