This substance has an affinity for water.

这物质和水有亲和力。

《新英汉大辞典》

The gooey substance produced by mixing cornstarch with a little water is a commonplace example of such material.

玉米淀粉和少量水混合后产生的粘稠物质就是这种物质的常见例子。

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Pouring concrete mixture into the sea immediately started the hardening process and rather than just dissolving in the mass of water, the substance was tough and long-lasting.

将混凝土混合物倒入大海后立即开始硬化过程，而且该物质非但不会在水中溶解，还保持坚硬耐久。

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"Basically,it's an underwater balloon. You've got two parts to it: You've got the balloon here - which is this long cylindrical object - and that's filled with a lighter-than-water substance, which is aviation gasoline."

VOA: standard.2010.06.21

Drop several seeds over the surface of the pot and cover with a thin layer of vermiculite, a substance that can hold air, water and nutrients.

VOA: special.2009.04.21

Rats with tumours were also less eager to drink sugar water, a substance that usually attracts the appetites of healthy rats.

BBC: Tumour make-up 'fuels depression'

Cosgrove and his team worked on altering the stickiness of regular gum by changing its water-repellent qualities, encouraging water to form a layer around the substance so that it could be more easily removed from most surfaces.

FORBES: Will Non-Stick Gum Chew Up Wrigley's?

The gooey substance produced by mixing cornstarch with a little water is a commonplace example of such a material.

ECONOMIST: Monitor: Fluid defences | The