theory ☊ 
理论 → ☊ 
lý thuyết 
theory like: lý thuyết → →
die Theorie ☊ 
lý thuyết ☊ 
☊ Ich hoffe, dass ich mein bisher theoretisch gelerntes Wissen in die Praxis umsetzen kann. ☊ Hy vọng tôi có thể áp dụng các kiến thức lý thuyết đã được học vào thực tế. ☊ (Lektion 103, Nr. 1742) Ich möchte in die Praxis umsetzen, was ich bisher in der Theorie gelernt habe. ☊ Tôi muốn áp dụng các kiến thức lý thuyết đã học vào thực tế. ☊ (Lektion 105, Nr. 1816) What are you basing this theory on? ☊ base sth on/upon sth ☊
The theory seems to have no basis in fact. ☊ basis ☊
to construct a theory ☊ construct ☊
demonstrate sb/sth to be sth: The theories were demonstrated to be false. ☊ demonstrate ☊
evidence (for sth): We found further scientific evidence for this theory. ☊ evidence ☊
fit sth: The facts certainly fit your theory. ☊ fit ☊
the gap between theory and practice ☊ gap ☊
theories about the origins of language ☊ language ☊
Scientists have a fairly negative attitude to the theory. ☊ negative ☊
He makes only a passing reference to the theory in his book (= it is not the main subject of his book). ☊ passing ☊
particle/nuclear/theoretical physics ☊ physics ☊
the theory and practice of teaching ☊ practice ☊
His theories on economics are enough to make your head spin (= make you feel very confused). ☊ spin ☊
The course teaches you the theory but there's no substitute for practical experience. ☊ substitute ☊
The results of the experiment supported her theory. ☊ support ☊
The statistics offer further support for our theory. ☊ support ☊
suppose sth: The theory supposes the existence of life on other planets. ☊ suppose ☊
The debate is centred around two conflicting theories. ☊ theory ☊
the theory and practice of language teaching ☊ theory ☊
literary theory ☊ theory ☊
I have this theory that most people prefer being at work to being at home. ☊ theory ☊
In theory, these machines should last for ten years or more. ☊ in theory ☊
That sounds fine in theory, but have you really thought it through? ☊ in theory ☊
'Aren't you supposed to be retired?' 'Yes, in theory.' ☊ in theory ☊
theories of how the universe began ☊ universe ☊
write that...: In his latest book he writes that the theory has since been disproved. ☊ write ☊