61.   The good stiffness, combined with low density, means that wood is very efficient in beams and columns.

62.   The ions combine with proteins to form a reddish-colored complex.

63.   The lasting weakness of the euro, combined with soaring oil prices, had begun to fuel inflation.

64.   The recompense is meagre, but when combined with ideological enthusiasm it helps sustain a new type of local politician.

65.   The Senate has passed a similar bill, which will be combined with the House version.

66.   The standard treatment is surgery, often combined with radiation.

67.   Their relief that war had been avoided was combined with sadness at what they had lost.

68.   Then it is combined with hydrogen in a catalytic converter to produce methane gas and water.