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any of various small mothlike dipterous flies of the genus Phlebotomus and related genera: the bloodsucking females transmit diseases including leishmaniasis: family Psychodidae 沙蝇
The effectsof the different content ofspecialmanufactured sand, fly-ash, waterproofadmixtureon the self-shrinkage of the cementmatrixgrouting paste were studied in this article.
Hawaii has some of the most spectacular scenery in the world, and tourists fly thousands of miles to see its white sand beaches and stunning volcanoes.
With a grassy hollow guarding the left front edge and sand at the right front edge, to get close you must wriggle in between the traps or fly over and pray for a soft landing.