原因是

• One reason for knudsen's notability was that his father had once been president of gm .
  努森之所以知名的另一原因是他的父亲曾经一度担任过通用汽车公司的总裁。
• This is due to a paucity of reliable evidence on the comparative advantages of the various species combination .
  原因是缺乏对各种混合种类相对利益的可靠证明。
• Second, each manufacturer of an antibiotic assigns to it for marketing purposes a trade name .
  第二个原因是，抗生素制造商为了市场的目的，要给它一个商品名称。
• He tried to shape his apology, for he had no intention of letting her see that he was nervous .
  他盘算着赔小心要怎样一个措辞，原因是他不打算让她看出自己心虚。
• One cause of delay in the development of new steels has been that welds have failed, causing cracking .
  阻碍新钢材发展的一个原因是焊接曾遭到失败，产生了裂纹。
• The major factors causing death are electrolyte imbalance and dehydration, leading to cardiac arrest .
  引起死亡的主要原因是电解质的不平衡和脱水，导致心脏停搏。
• a cause of the phenomenon was shown to be the pasteurization of the serum above 60℃.
  曾发生这个现象的唯一原因是在60以上对血清作巴斯德消毒。
• My real reason for being is that i am capable of baffling, almost miraculous, chemical conversions .
  我存在的真正原因是我能完成惊人的，几乎是奇迹般的化学转化工作。
• Man continually wages war on them , for they contaminate food , carry diseases , or devour crops .
  人类不断地向它们发出攻击，原因是它们污染食品、传染疾病或吞噬庄稼。
• For one reason, most biological effects operate at these, or lower levels of concentration .
  一个原因是：大多数生物效应都是在这样的（或者更低的）浓度水平下起作用的。