復(fù)雜的定語(yǔ)從句的拆分和理解 例20

例20　Studies of the Weddell seal in the laboratory have described the physiological mechanisms that allow the seals to cope with the extreme oxygen deprivation that occurs during its longest dives which can extend 500 meters below the ocean's surface and last for over 70 minutes.

【結(jié)構(gòu)分析】主干是Studies of the Weddell seal in the laboratory have described the physiological mechanisms，后面是個(gè)連環(huán)定語(yǔ)從句，定語(yǔ)從句that allow the seals to cope with the extreme oxygen deprivation，修飾前面的physiological mechanisms，后面加上定語(yǔ)從句that occurs during its longest dives，修飾前面的名詞，定語(yǔ)從句which can extend 500 meters below the ocean's surface and last for over 70 minutes修飾前面的名詞。

【亮點(diǎn)回放】此句話的亮點(diǎn)是三個(gè)連環(huán)定語(yǔ)從句，氣勢(shì)磅礴，層層修飾前面，是定語(yǔ)從句中少有的高級(jí)句型，作文也可以使用，很經(jīng)典。

【核心詞匯】

Weddell seal　威德?tīng)柡１?

physiological mechanisms　生理機(jī)能

oxygen deprivation　缺氧

longest dives　最長(zhǎng)時(shí)間的潛游

extend　延展

【參考譯文】在實(shí)驗(yàn)室中研究威德?tīng)柡１膶?shí)驗(yàn)描述它們的生理特征，這些特征允許海豹應(yīng)對(duì)極度的缺氧，這種缺氧出現(xiàn)在最長(zhǎng)時(shí)間的潛游中，這種潛游可以持續(xù)到海平面500米以下而且維持超過(guò)七十分鐘。