英汉双语例句-生物医药大词典

Scientists have long been looking for ways to boost the body's immune system against cancer.

中文意思：
科学家们很长时间以来一直在寻找提高人体免疫细胞的能力以对付癌症的方法.

以下为相关句子列表(点击查看，可以看对应的解释）：

	Scientists have known for some time that hypertension is a “heritable” condition that runs in families, though diet and other factors also contribute to high blood pressure.			一直以来，科学家们都认为高血压是一种遗传因素为主、饮食和一些其他因素协同的家族性疾病。
	Scientists have known since the 1930s that there was a problem: that the mass of the observed matter was far too small for gravity to keep the stars within the galaxies and the galaxies within clusters.			自1930年以来，科学家们发现这样一个问题：宇宙中可见物质所形成的引力远不足以将星系内的恒星以及星系团内的星系结合在一起。
	Scientists have known that neural stem cells play a key role in both embryonic and postnatal mice, driving the development of specialized cells within the brain such as neurons, astrocytes, oligodendrocytes, and ependymal cells.			科学家们已经知道神经干细胞在胚胎和出生后小鼠均扮演着重要角色，推动着大脑具体细胞的发育例如神经元、星形细胞，胶质细胞和室管膜细胞。
	Scientists have learned to compound substances unknown to nature.			科学家已知道如何合成自然界所没有的物资。
	Scientists have located a bottleneck in the brain. Faced with two almost simultaneous tasks less than 300 milliseconds apart, the brain's ability to deal with the second one slows down.			科学家最新的研究结果表明，他们在大脑中发现一处“瓶颈”。当大脑在间隔不到300毫秒的时间里同时处理两件事情时，大脑对于第二件事情的反应就要慢一些。
	Scientists have long been looking for ways to boost the body's immune system against cancer.			科学家们很长时间以来一直在寻找提高人体免疫细胞的能力以对付癌症的方法.
	Scientists have long believed that bees first appeared about 120 million years ago -- but previous bee fossil records dated back only about 65 million years.			科学家们已经相信蜜蜂最早出现于1亿2千万年已经很久了，但是以前发现的蜜蜂化石记录只是在6500万年前。
	Scientists have long believed that greenhouse gases must have been insulating the earth much more efficiently than they do today.			长久以来科学家一直相信，远古地球上的温室效应可能比现在更显著。
	Scientists have long known that cartilage gets its strength from interlocking millimetre-long collagen fibres that work in a similar way to the load-bearing steel rods in reinforced concrete.			很久以前科学家就了解软骨通过将毫米长的胶原纤维进行交联来获得强度，这种方式类似于加强型混凝土中负重的钢柱。
	Scientists have long known that dolphins identify themselves with names, but the belief was that, like some monkeys, the animal's voice was the key ingredient of the call.			此前，科学家已经得知，海豚能对彼此的声音做出反应，但他们还想知道，海豚发出的这种声音中是否包含能让其身份变得更加清晰、更好辨认的某种因素，亦或它们的“名字”本身就足够用来识别了。
	Scientists have long sought such a stiff-leafed rice plant, believing that it would raise grain yields.			科学家经过长期的努力，研究出这样一种有长而直的叶子的稻子，他们相信这种稻子会提高谷物的产量。