每日背誦第三期28
Yet, Antarctica's fragile and complicated eco-system is threatened by its human visitors. Damage to the environment occurs as people come looking for resources beneath the ice, or carelessly leave their garbage behind. Currently, countries are working to ensure that the damage to Antarctica's environment is minimized, and that the last wilderness on Earth will remain an unspoiled place.
不過，南極洲脆弱而復(fù)雜的生態(tài)系統(tǒng)正受到由人類組成的游客的威脅。人們來這兒尋找冰層下的自然資源，或不經(jīng)意的留下垃圾，都會對環(huán)境造成污染。目前，各國正努力使對南極洲環(huán)境的破壞降到最低，以確保地球上的最后一片荒野能永遠(yuǎn)是一塊未受破壞的地方。
(短文節(jié)選,本篇始于：南極大陸)
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