certain - (at times followed by `to') implementing to or characterised by or distinguishing one thing specific or special or unique; "policies with particular application"; "requires certain to the job"; "a selected and specific account in the accident"
The electrical organs of fishes offer Yet another circumstance of special problem; it is actually difficult to conceive by what techniques these wondrous organs are already made; but, as Owen and Many others have remarked, their personal construction intently resembles that of frequent muscle mass; and as it has recently been revealed that Rays have an organ closely analogous to the electrical apparatus, and still don't, as Matteuchi asserts, discharge any electric power, we must have that we're far far too ignorant to argue that no transition of any sort can be done.
specially The machine was 헬스케어 specially designed for a left-handed operator.