First boil in plain water for 20 seconds.

首先在白开水里煮20秒。

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Both were offered plain water or water with sucrose.

给他们都喂两样东西：白水和蔗糖水。

youdao

For instance, substitute vegetable stock for plain water when making rice.

比如在做米饭时用蔬菜高汤代替平时的水。

youdao

Okay, how little plain water was actually consumed.

好,所喝的白开水很少

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

To truly stay well hydrated, you likely have to drink more coconut water, than if you drink plain water.

FORBES: The Truth Behind The Coconut Water Craze

The bottom line is that most people who lightly exercise do not need sports drinks or even coconut water- plain water is just fine.

FORBES: The Truth Behind The Coconut Water Craze

While coconut water is low in calories, rich in potassium, and fat and cholesterol free, the evidence that it is actually better than plain water for simple hydration is unfortunately lacking.

FORBES: The Truth Behind The Coconut Water Craze