The substance does not dissolve in water whether heated or not.

无论加热与否，这种物质都不溶于水。

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"Some compounds dissolve in water," she said.

“一些化合物溶于水，”她说。

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Both of the substances do not dissolve in water.

不是两种物质都溶于水。

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Some of the segments dissolve in water, the gray segments here, and the lightly colored segments don't dissolve in water, they dissolve in fat.

有些片段可以溶于水中,像这里的灰色片段,而浅色的片段不溶于水,它们溶于脂肪中

耶鲁公开课 - 生物医学工程探索课程节选

Now this behaves very differently in water because part of it is water soluble, this part is, it's a molecule that would like to dissolve in water and part of it is like oil, it doesn't want to dissolve in water.

它们在水中表现出十分不同性质,因为一部分是水溶性的,这一部分是,是一种可以溶于水的分子,而另一部分就像油,不会溶于水中

耶鲁公开课 - 生物医学工程探索课程节选

Let's take salt, solid, and dissolve it in a bunch of liquid water.

我们把食盐晶体，溶解在一些水中。

麻省理工公开课 - 热力学与动力学课程节选

Organisms that make shells or have skeletons that are exposed to seawater, such as clams, snails and sea butterflies, could see their shells dissolve in water that is too acidic.

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This is a molecule or molecular combination that has different properties on different parts of its surface: in particular, one part prefers to dissolve in water whereas another part prefers oil.

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One way round this for a swimming animal is to develop an outlet which allows urea to dissolve directly in the water as it swims, which is what the turtles seem to have done.

ECONOMIST: Softshell turtles urinate through their mouths