beyond doubt; beyond question; indisputable; no need for reticence; past dispute:there is no denying (/hiding) the fact; undeniable
? 這些都是～的事實。(《毛澤東選集》227) All these are indisputable facts.
? 工會的公開活動，受了莫大的限制和紛擾，卻是～的。There is no denying that open trade union activities have been greatly restricted and interfered with.
無可諱言
there is no hiding (or denying)the fact that…
～事實undeniable (or indisputable)fact
無可諱言wú kě huì yán
諱言：有顧忌，不愿說或不敢說。沒有什么可忌諱或不敢說的。there is no hiding the fact, undeniable, beyond all question