761855 His theory is difficult to understand. Zifre 1187821 His theory was absolutely unrealistic. NekoKanjya 16865 I don't mean to challenge your theory. papabear 1468147 John Dalton created the Atomic Theory. AMIKEMA 2824583 Could you elaborate on your new theory? eirik174 33313 Most experts think a lot of his theory. CM 287774 His theory is based on careful research. CK 16866 I think your theory does not hold water. Zifre 2640863 Tom has a theory about why this happens. CK 820566 Darwin developed the evolutionary theory. corvard 287776 It is difficult to understand his theory. Zifre 3002004 I'm not interested in any of your theories. CK 325358 Theory and practice should go hand in hand. CM 755198 I can't find anything wrong with his theory. sctld 1739305 This theory is scientifically controversial. belgavox 41251 Have you studied Darwin's theory of evolution? CK 287777 Few people are able to understand his theories. CK 396095 The teacher explained his theory using pictures. jakov 271879 There are many theories about the origin of life. CK 23153 We associate Darwin with the theory of evolution. Swift 274142 The theory of relativity originated with Einstein. CM 56523 This theory is too difficult for me to comprehend. CM 274143 Few scientists understand the theory of relativity. CM 46101 The new theory is too abstract for ordinary people. CM 325355 Theory and practice do not necessarily go together. U2FS 56962 This book deals with the new theory of linguistics. CM 71917 We associate Einstein with the theory of relativity. CM 877797 Even today, his theory remains practically irrefutable. alexmarcelo 471218 As far as I know, there are no good books on the theory. CM 3002005 I'm not interested in hearing any more of your theories. CK 862971 We associate Darwin's name with the theory of evolution. papabear 71913 Einstein's theories contributed greatly to modern science. CM 328780 To be frank, I think this 'conspiracy theory' is nonsense. fcbond 729885 I must confess that my theory doesn't account for that fact. darinmex 262804 We associate the name of Darwin with the theory of evolution. CM 70333 I wouldn't go so far as to say your theory is completely wrong. CM 325368 In theory it is possible, but in practice it is very difficult. bluepie88 71918 We associate the name of Einstein with the theory of relativity. CM 251006 A pet theory of mine is that things should be seen from a distance. CM 897399 The theory of the Big Bang was proposed in 1927 and expanded in 1929. alexmarcelo 62347 In the light of these facts, it may be necessary to revise our theory. CK 682168 Scientists are debating his theory about the disappearance of the dinosaurs. Source_VOA 2163139 Other scientists are debating his theory about the disappearance of dinosaurs. Source_VOA 682169 Albert Einstein's theory of relativity is the most famous formula in the world. Source_VOA 29707 A more plausible proposal is the one Leech presented in conjunction with Emmet's theory. CM 30000 A good theory is characterized by the fact that it makes a number of predictions that could in principle be disproved or falsified by observation. CM