well-known fact
3.It is a well-known fact that Chinese society and Chinese life are organized on the basis of the family system.
5.Keep in mind the fact that there are only two known elements in the whole universe, energy and matter. It is a well known fact that matter may be broken down into units of molecules, atoms, and electrons. There are units of matter which may be isolated, separated, and analyzed.The human mind is a form of energy, a part of it being spiritual in nature.
6.From the gas velocity field of Mira variable we estimated a mass loss rate of 1.19×10-6 M⊙/yr. which is also consistent with the well-known observational fact.
7.Dated nearly 600 years ago，the well-known Ming Tombs are in fact 13 tombs of emperors of the Ming Dynasty （reigned 1368-1644）10km to the north of Changping County and 50km away from downtown Beijing，it has long been one of the noteworthy places of interes
8.Yesterday I happened to mention this fact to the President, and told him that I was extremely glad that he had to write so many drafts when he is such a well-known and acknowledgedly fine speaker.
9.Yesterday I happened to the mention this fact to the President, and told him that I was extremely glad that he had to write so many drafts when he is such a well-known and acknowledgedly fine speaker.
