It dissolves up these salts, but then creates acid.

水溶解这些盐，然后产生酸。

While the water table is rising to the surface, it dissolves the salt.

当地下水位上升到地表时， 它会溶解盐分。

When it's mixed with water, the water dissolves the salt into it's component ions.

当它与水混合时， 水将盐溶解成它的组分离子。

And these membranes are negatively charged, and help to repel the negatively charged chloride ions that are in that dissolved salt.

这些膜带负电，有助于排斥溶解盐中带负电的氯离子。

So mix the three things together. Try and do it quite gently because you don't want loads of foam and bubbles. But you do need to stir until the salt's dissolved.

把这三样物质混合在一起。尽量非常轻柔的倒入并搅拌，因为你不希望有大量的泡沫和气泡。但你确实需要搅拌，直到食盐溶解。

In this small science experiment, I dissolve salt in this water and place it into a tube.

来个小实验，在水里溶解这些盐，然后放到个袋子里。

In salt water, the dissolved salt ions fill the unused space between water molecules, which means there is more mass in a given unit of volume of salt water compared to fresh water.

在盐水中，溶解的盐离子填充水分子之间未使用的空间，这意味着与淡水相比，给定单位体积的盐水的质量更大。

As anyone who has swum in the sea knows, seawater is saline, meaning it has a relatively high amount  of dissolved salts in it compared to freshwater.

任何在海里游过泳的人都知道，海水是盐水， 这意味着与淡水相比， 海水中溶解的盐分含量相对较高。

Any organism that wants to survive in the ocean  must evolve its structure and internal organs so that it can cope with this  amount of dissolved salt.

任何想要在海洋中生存的生物都必须进化其结构和内脏器官，以便能够应对这种量的溶解盐。

The  water of the oceans is saline, meaning salty, in that it is composed of about 3.5% of dissolved  salts, the majority of which is sodium chloride, or common table salt.

海洋的水是咸水，意思是咸的，因为它由大约 3.5% 的溶解盐组成，其中大部分是氯化钠或普通食盐。