Heat liquid of choice with a bottle warmer, or microwave on medium (50%) power for 15 to 30 seconds.

如果液体需加热，用奶瓶加热器加热液体，或者微波炉中火15-30秒。

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Put on socks or a warmer layer on the bed. Fill a hot water bottle or microwave a wheat-bag.

穿上袜子或在床上铺上温热装置，用热水瓶或热水袋。

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Now it is widely used in a series of small electrical heater such as hair curler, temperature invariable cup, temperature invariable bottle, electrical hot board, dryer, hand warmer and so on.

现已广泛应用于煮水器、汤发夹、保温器、保温瓶、电热板、电汤门、干燥器、暖手器等小型发热电器上。

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Crowding can also mean warmer-than-usual conditions -- carry a bottle of water to stay hydrated.

BBC: Navigating the London 2012 exodus