The roof was repaired by Charles with sealant and cement.

查尔斯用密封胶和水泥修补了屋顶。

Polyurethane foam sealant was used during construction at the first floor underground, releasing flammable gases that accumulated to reach combustible conditions.

地下一层施工作业中使用聚氨酯泡沫时，释放易燃气体局部积聚达到可燃条件。

And then with some kind of sealant, he puts it back together.

然后用某种密封，他把它重新组装好。

So to me, the importance of sealant is it has to look good.

对我而言，密封的重要性在于它必须看起来美观。

And because the ginger could use some sealant.

因为姜也需要一些密封。

I got in a conversation with Jim about sealant.

我和吉聊起了密封的事。

That will create a film of water that then if you put a sealant over it, that will trap the moisture from evaporating.

这会形成一层水膜，然后如果你在上面涂上密封胶，就会将防止水分蒸发。

It's used in all kinds of products, including adhesives, fibre optics, sealants, cling film, paper, fuel, explosives, sporting equipment, roofing, bottle stoppers, and tires.

它在各种产品中都被使用包括粘合、光纤、密封食品薄膜、纸张、燃料、炸药运动器械、屋顶、瓶塞以及轮胎。

But all of that is when acrylamide is used as a sealant, not when it's a byproduct of toasting your bread for too long.

但所有这些情况都是丙烯酰胺用作密封的结果，不是烤焦面包上的副产物。

These chemicals-widely used in the middle decades of the 20th century to manufacture electrical insulation, coolants, sealants and plasticisers-often ended up dumped in lakes, rivers and coastal waters.

在20世纪中的几十年中，这些化学物质广泛应用于制造电气绝缘物，冷却，密封和增塑，它的废物排污于湖泊，河流和海水中。

But if you're not properly moisturizing the area first, it's just kind of gonna operate as a sealant and not really work to actually moisturize your lips.

但如果你没有先正确地给唇部保湿，它就只是起到密封的作用， 而不能真正帮助你的唇部保湿。

Shampoos also get fancy with their polymers—some add volume or weight or increase the shine and feel, while others protect from things like UV rays—but, in essence, they all work like waterproofing sealant on a deck.

洗发水的聚合物也很花哨——有些可以增加体积或重量或者改善光泽和触感，而有些则可以防止紫外线——但本质上，它们作用都像甲板上的那层防水密封胶。

So you remove all the old sealant, gently, carefully, and then you tape everything out, the old tape line, and then you apply the glue and use your finger to smooth it out.

所以你轻轻地、小心翼翼地清除所有旧的密封，接着用胶带标出旧的胶线位置，然后涂抹胶水，并用手指将其抹平。