as different as heaven and hell; as far apart as sky and sea; as like as chalk and [to] cheese; a world of differences; be quite a different pair of shoes; vast difference
Example Sentences:
1.
How different their letters were from those he had written to the venerable . 他们的信和他写给老太爷的信真是天渊之别。
2.
She knew the truth and the real danger of delay-he knew neither; therein lay all the difference in the world . 她知道事情的真相和旷日持久的真正危险-他两者都不知道；这就有天渊之别。
3.
Inland province is mixed really guangdong . do these shanghai places have a world of difference ? 内陆省份真的和广东.上海这些地方有天渊之别吗？ ？
4.
His meal was usually a bowl of rice with black fermented bean , but in strong comparison , mine was full of hams and poached eggs 他的饭菜永远是黑黑的豆豉，我的便当却经常装著火腿和荷包蛋，两者有著天渊之别。
5.
These sheep were too clean to be called farm animals , they looked more like pets . this sheep was so keen to play with the children 这些羊实在太乾净了，与在牧场所见到的羊实在有天渊之别，这些像宠物羊多一点。这只羊一点都不怕人，还爬上来与小孩玩。
6.
There are also vast disparities between arab towns and jewish towns in government spending on schools , medical systems , roads and electricity , clean water , and social services 阿拉伯城镇和犹太城镇的政府投资,例如学校,医疗系统,道路,电力,净水和社会服务机构,简直是天渊之别
7.
The reason is very simple . the density in the stellar and interstellar environment is extremely low , lower than any vacuum conditions that we can create in the laboratory . such conditions are a far cry from the hot , dense environment in the great depths of the earth where diamonds are formed 理由很简单，恒星大气和星际间环境的密度远比任何实验室能制造出来的真空为低，这和地球深处又热又高密度的环境有著天渊之别，又怎可能制造出钻石？
