Our water is very hard.

我们的水很硬。

《牛津词典》

By now the man in the river was trying very hard to breathe and was even swallowing some of the river water.

这时， 河里那个人已经呼吸困难，而且又呛了好几口水， 于是他说：「好啦！

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The egg is originally crumbly the very thin outer shell protects the internal organs of the liquid once the boiled water cook the internal organs become hard.

鸡蛋原来是易碎的，薄薄的外壳保护着液态的内脏，开水一煮，内脏变硬。

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