Water dropping day by day wears the hardest rock away.

水滴天天滴不停，石头最坚也磨损。

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The utility model not only has convenient movement, but also has small volume, low noise, high efficiency and no condensed water dropping outside wall bodies.

故本实用新型它不仅移动方便，而且体积小，低噪音，效率高，无冷凝水滴落在墙体外。

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Spokeswoman Terri Nisich told the Associated Press that firefighters had begun an aggressive operation from dawn on Friday, using nine water-dropping helicopters to try to quell the flames.

BBC: Fire destroys California mansions

Water tables are dropping by a metre or more every year across much of northern China.

ECONOMIST: China and water

Search teams have been dropping water bottles and food items to other survivors who are still trapped.

BBC: Dhaka building collapse: Fears for hundreds still missing