unheard-of造句
31. If (when?) it spreads to China and India, it will combine with the surplus of bachelors to cause unheard-of strains.
32. Thus, the "Cambrian Explosion" is a fairly unheard-of term outside the scientific community.
33. Countries around the planet grew at unheard-of levels—124 of them expanded at 4 percent or more in 2006 and 2007.
34. Whitman's fearless, unheard-of voice shattered the glass of European gentility and eventually emboldened later generations of American poets to speak out in wilder tones.
35. Such unheard-of crowds and profits ended boxing's shadow existence and ushered in its golden era, which would last through the 1950s.
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