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см. тж. бесспорно самый лучший

• These impressions in the lunar surface are indubitably craters.

• There is no question (that) the devices could be made much smaller.

• Without question (or Unquestionably, or Doubtless(ly), or Undoubtedly, or Undeniably) the major source of man's intake of mercury is his food.

• This is far and away your best buy.

• To be sure (разг.), the ratio of ... is 100 times greater in the sun than ...