1.Typical ofthegrasslanddwelers ofthe continent is the American antelope, Or pronghorn.
美洲羚羊,或称叉角羚,是该大陆典型的草原动物。
Typical: 典型的
grassland: 草原
dweller:居住者
Continent:大陆
antelope: 羚羊
Pronghorn: 角羚
2. Of the millions who saw Haley's comet n1986. how many people will livelong enouah to see it return in the twentyfirst century.
1986 年看见哈雷慧星的千百万人当中,有多少人能够长寿到足以目睹它在二十一世纪的回归呢?
Millions: 千百万
Comet: 彗星
twenty-first: 21
3. Anthropologists have discovered that fear, happiness, sadness, and surprise are universally reflected in facial expressions.
人类学家们已经发现,恐惧,快乐,悲伤和惊奇都会行之于色,这在全人类是共通的。
Anthropologists :人类学家
universally:全体地
reflected:反映
expressions:表情
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