You use admittedly when you are saying something which weakens the importance or force of your statement.
例句
It's only a theory, admittedly, but the pieces fit together...诚然,这只是一种理论,但各部分互相吻合。Sometimes, avoidance of one particular food will have this beneficial effect, though admittedly rarely.有时,对某一食物的忌口能带来这种好处,尽管不可否认这种情况极为少见。
英汉词典释义
adv.
诚然;确实地, 无可否认地
He is admittedly an atheist.他被公认是位无神论者。He is looking to improve on his admittedly modest achievements so far.迄今为止,他的成就的确不算大,他打算更进一步。