英汉双语例句-生物医药大词典

It has long been a puzzled subject that vocality teaching for adults is professional, practical and technical.

中文意思：
摘要成人声乐教学由于其技术性高、实践性强、教学难度大，多年来一直是成人音乐专业教学的难题。

以下为相关句子列表(点击查看，可以看对应的解释）：

	It has just been announced that Amos has been awarded the Prince of Asturias Award for Letters 2007, recognising his contribution to the world of literature.			据悉，我们正在谈论的以色列诺奖提名作家阿摩司·奥兹获得2007年度阿斯图里亚斯亲王文学奖，以表彰他对世界文学做出的杰出贡献。
	It has just entered the seventh edition .			它刚出版了第七版。
	It has just entered the seventh edition.			它刚出版了第七版。
	It has justly reviewed most target bid price and saved vast amount of investment for the government.			自中心成立以来，我公司公正审查了该中心委托的大部分标底，为国家节约了大量的投资。
	It has led Russia to demographic accident.			它导致俄国意外事故。
	It has long been a puzzled subject that vocality teaching for adults is professional, practical and technical.			摘要成人声乐教学由于其技术性高、实践性强、教学难度大，多年来一直是成人音乐专业教学的难题。
	It has long been an acknowledged want.			长期以来这是公认的必需品。
	It has long been assumed that aggression is caused by male hormones，but scientists today believe that male hormones are only part of the explanation，and they say aggressiveness in boys is also caused by mothers.			在漫长的历史长河中，自从人类习惯了语言这种形式，它一直是最完整，最常用的文化交流媒介。
	It has long been known that folic acid plays an important role in the production of normal red blood cells.			很早以前，人们就发现叶酸对红血球的产生起着很重要的作用。
	It has long been known that schizophrenia often runs in families, but solid and direct links to heredity hae been elusie.			人们早就知道精神分裂症常常是家族性的，但要在遗传学上找出确凿而又直接的联系一直困难重重。
	It has long been known that schizophrenia often runs in families, but solid and direct links to heredity have been elusive.			人们早就知道精神分裂症常常是家族性的，但要在遗传学上找出确凿而又直接的联系一直困难重重。