This smart washing machine will dispense an optimal amount of water for the load.

这台智能洗衣机会根据衣物多少适当安排进水量。

《牛津词典》

The smart little pig fired and boiled water on it.

聪明的小猪用火烧开了水。

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If the air in your room is too dry, a smart sprinkler could water your plants by itself when you are not at home.

如果房间里的空气太干燥，智能洒水器可以在你不在家的时候自动给植物浇水。

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But what I see again and again is that people are proud of their pets, proud of the way that they run, proud of how they nose around with the other dogs, proud that they are brave enough to go into the water or smart enough to stay out of it.

NPR: 'Dog is My Co-Pilot'

Water can be easily stored and consumers have less discretion over when they use it (for instance, people cannot defer going to the toilet, which uses more water than any other activity at home), so the case for smart water meters is weaker.

ECONOMIST: Utilities are getting wise to smart meters and grids

According to the Cleantech Group, only 2% of global institutional venture capital was focused on smart water investments.

FORBES: On World Water Day: A Call for Innovation