ago raised the hopes of transplant scientists looking for an endless supply of lifesaving organs.  将近5年前,克隆羊多莉给寻求无穷无尽的救命器官供货的移植学家带来了希望。

　　69.i would (had) rather join you in research work than go on a holiday to the seaside.  我与其到海滨去度假，倒不如和你们一起参加科研工作。

　　70.the further that joy dug into the cutting edge of research in the new technologies－robotics, genetic engineering and nanotechnology－the more horrified he became.  乔伊在机器人学、基因工程和纳米技术等新技术研究领域的前沿钻得越深, 就越感到恐惧。

　　71.what henry ford is to the automobile, george eastman to photography, and charles goodyear to rubber, edison is to not one but several of today’s essential technologies.  对当今不止一项而是多项重要技术的贡献, 就如同henry ford 对汽车、george eastman 对摄影、charles goodyear 对橡胶的贡献一样大。

　　72.very heavy objects or bulky materials like coal, cement, mineral ore, and the like, are weighed in tons.  非常重的物体或者像煤、水泥、矿石等堆积如山的原材料用吨计重。

　　73.by the end of this century, about 5,000 modern windmills wil

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