英汉双语例句-生物医药大词典

It is seldom very hard to do one's duty when one knows what it is，but it is often exceedingly difficult to find this out.

中文意思：
在知道自己的责任时时尽责往往并不困难，但弄清责任何在常常极其费力。

以下为相关句子列表(点击查看，可以看对应的解释）：

	It is science that teaches us to respect the natural ecology.			是科学，让我们懂得尊重自然生态。
	It is scientifically designed based on the fact that every direct or indirect smell influences the autonomic nervous system and psyche through the upper nerve centers.			芭莎典娜芳香卡中纯植物提炼的精华成分，对脑垂体和自律神经系统形成直接或间接的影响。
	It is seen in the sky after sunset.			日落后可在天空中看到它。
	It is seen on the tables of most famous restaurants in France as an accompaniment to good food and wine.			在法国最知名餐厅的饭桌之上，它被视作美酒佳肴的佐餐饮料。
	It is seldom that you will ever have three consecutive losses.			很少会出现连续三次的亏损的。
	It is seldom very hard to do one's duty when one knows what it is，but it is often exceedingly difficult to find this out.			在知道自己的责任时时尽责往往并不困难，但弄清责任何在常常极其费力。
	It is self-evident that animal cannot live without water.			不用说，动物没有水是无法生存的。
	It is self-evident that the advance of science and technology is of vital importance to China's modernization.			不言而喻,科学技术的发展对中国现代化是至关重要的.
	It is self-evident that the education of the young is vital to the future of a country.			不言而喻,年轻一代的教育对祖国的未来极其重要.
	It is separated from the rest of Europe by the English Channel in the south and the North Sea in the east.			南面的英吉利海峡和东面的北海将它与欧洲其它部分隔开。
	It is separated into a few fractions which boil over different ranges of temperature.			它按沸点的几个温度范围分成少数几种馏分。