But some plastic materials change over time.

但是一些塑料材料会随着时间的推移而变化。

This has happened before, but it hasn't really brought about much material change.

以前也发生过这种情况，但它并没有带来多少实质性的变化。

The men fired handguns at several materials protected by Kevlar. The material changed the shape of the bullets.

这些人用手枪射击了几种受凯夫拉尔保护的材料。 材料改变了子弹的形状。

Virtually all acoustic instruments produce harmonic series, but each instrument’s shape and material changes the balance of its harmonics.

几乎所有声学乐器都会产生谐波系列，但每种乐器的形状和材料都会改变其谐波的平衡。

It became, oddly enough, a place of psychic hominess.Ruburt in particular resented the material changes made there, and felt left out in the cold.

奇怪的是，它变成一个灵性上的通灵之家。鲁柏特别反感那里的物质变化，觉得自己被冷落了。

He said he had edited – meaning changed – the genetic material of two human embryos. The embryos developed into twin girls, who were born.

贺建奎称，他编辑（改变）了两个人类胚胎的遗传物质。这些胚胎发育成一对双胞胎女婴并顺利出生。

Yao says researchers are still learning how to control different morphing materials but shape changing pasta may be the first to find its way to customers.

姚说研究人员们仍在研究如何控制不同的变形材料，能变形的意大利面也许是首先拥有客户群体的变型产品。

And when we have either humidity or light or pH or temperature changes, this material changes in its shape, and it becomes bigger.

当湿度、光线、pH 值或温度发生变化时，这种材料的形状就会发生变化，并且会变得更大。

Nevertheless, if we have a short period of time in view and can safely assume no material change in any of these factors, we can treat V as nearly enough constant.

然而，如果我们考虑的时间很短，并且可以安全地假设这些因素中的任何一个都没有发生实质性变化，我们就可以将 V 视为几乎足够的常数。

And immediately, though not very fluently, gave him to understand, that her sentiments had undergone so material a change, since the period to which he alluded, as to make her receive with gratitude and pleasure, his present assurances.

她立刻吞吞吐吐地告诉他说，自从他刚刚提起的那个时期到现在，她的心情已经起了很大的变化，现在她愿意以愉快和感激的心情来接受他这一番盛情美意。

And now, I come to a very important passage in Oliver's history; for I have to record an act, slight and unimportant perhaps in appearance, but which indirectly produced a material change in all his future prospects and proceedings.

现在，我来到奥利弗历史上一段非常重要的段落；因为我必须记录一个行为，也许表面上是微不足道的，但它间接地对他所有的未来前景和进程产生了实质性的改变。