31. Once a row is placed, the members mark time until all rows are into position. 32. "But it's better to mark time than regress ." 33. Ferraro may have always seen it as a parking spot in which to mark time . 34. Human beings mark time in anniversaries, birthdays, New Year's Eve parties and Fourth of July barbecues. 35. "Now is the time to quicken the march of progress, not mark time , " he said. 36. Kids don't mark time the way adults do. 37. In the summer, you can mark time by ticking off the interval between a humpback's breaths. 38. "Kids don't mark time the way adults do. 39. In the written language That is, they might arguably mark time reference, but not yet systematically. 40. To be more precise, scientists arbitrarily chose to mark time by the reliable vibrations of cesium atoms.
