In the course of serving tea, the host should take careful note of how much water remaining in the kettle and in the cups of the guests.

在上茶的过程中，主人要注意茶壶和客人的茶杯里还剩多少水。

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With the kettle of boiling water in her hand, she moved quietly toward the front door.

她手里拿着一壶开水，悄悄地朝前门走去。

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The kettle (on the fire) is nearly dry. Put some more water in it, quick.

壶要烧干了，赶快续水。

《新英汉大辞典》

Indeed, on the tiny residential scale think about how much energy is wasted when you heat up a whole kettle of water to make just one cup of tea.

FORBES: To Conserve Energy - Conserve Water

She puts water in the tea kettle, gets the treat, pets the dog, and decides to throw the dog bed covers into the wash, and realizes the wet load in the washer has to be hung on the line (yes, she even hung her laundry in the sun).

FORBES: 4 Productivity Strategies for Working With "Disorganized" Brilliant People

Once again she returns to the kitchen to make her cup of tea and realizes she never turned the stove on to boil the water in the tea kettle, so she turns the dial and adjusts the flame, grabs an apple and a stack of mail that needs attention and heads back into her office and back to me.

FORBES: 4 Productivity Strategies for Working With "Disorganized" Brilliant People