物质的改变

Yet they leave no sort of traceinthe archaeological records unless they are captured by a dictaphone or written down by a clerk.

战场上军队的行动可能"改变历史的进程"，但从考古学的观点来看，这同样是难以捕捉的；可能更糟的是，多数有机物质会腐烂。

The brain capillary and star glue quality cell which enwrap around it under thenormal condition form the permeation extremely low blood-brain barrier, onlypermit some little molecule to pass; When cerebral isc.

正常状态下的脑毛细血管及包裹在其周围的星形胶质细胞构成了通透性极低的血脑屏障，只允许一些小分子物质通过；当缺血性中风发生时，微血管通透性发生显著改变，这种病理变化与脑内皮细胞损伤导致的功能变化有直接的关联。

Accelerated as the economy down and people worry that their assets are decreasing, a clinical psychologist Mary Gresham said, parents can leave the traditional shopping habits changed to non-material consumption celebrations to change them and their children to buy habits.

随着经济的加速下跌和人们担心自己的资产不断减少，临床心理学家玛丽格雷沙姆说，家长可以把传统的假期购物习惯改成非物质消费的庆祝活动，以改变他们和他们孩子的购买习惯。

With the economy in freefall and people worried about their dwindling assets, clinical psychologist Mary Gresham says parents can turn the holidays into a non-materialistic, joyous celebration by working to change their and their children's buying habits.

随着经济的加速下跌和人们担心自己的资产不断减少，临床心理学家玛丽格雷沙姆说，家长可以把传统的假期购物习惯改成非物质消费的庆祝活动，以改变他们和他们孩子的购买习惯。

The proteins caused haze in the beer during storage. C-I type of silica hydrogel produced in specific method was suitable to stabilizing beer and noneffective on other constituents and the character of the beer.

试验筛选出适用于啤酒的，经特定制备方法制得的C-Ⅰ型硅凝胶，其对啤酒中高分子含氮物质具有较强的选择性吸附作用，可有效地提高啤酒的非生物稳定性，且不改变啤酒的其它纽分和外观质量。

The process and particular substances in oocytes used for recipients destroy all status for donor cells to continue their differentiation, altering the specific three-dimensional structure of chromosomes during cell differentiation and reprogramme the donor karyon.

克隆动物的过程及其卵母细胞质中的特殊物质破坏了维持供体细胞分化状态的各种条件，改变了分化细胞染色体的特定空间结构，对分化细胞进行了重新编程。

So even if the bugs and their secreted proteases do not chop your sample into bits, they can degrade reagents, alter the pH of the solution, or generate chemical species which can influence crystallization and even make reproducing conditions a pain in the tush.

就算这些可恶的家伙们没有将你的样品"嚼碎"，它们也可能影响你的试剂，改变溶液的pH，产生可能干扰结晶的化学物质，使得你的实验很难重复出来。

Midstream Rule Changes. There were dramatic discoveries in Superfund's early years valleys filled with chemical drums, unfenced dump sites littered with explosives, fissures where toxins oozed out of the earth.

中途政策改变：在超巨额基金设立头几年，人们的发现触目惊心—山谷中堆满了装化学晶的圆桶，没有隔离的垃圾堆放场扔满了易爆物品，垃圾掩埋场所出现的裂缝中，有毒物质渗出地面。

Midstream Rule Changes. There were dramatic discoveries in Superfund's early years valleys filled with chemical drums, unfenced dump sites litter ed with explosives, fissures where toxins oozed out of the earth.

中途政策改变：在超巨额基金设立头几年，人们的发现触目惊心—山谷中堆满了装化学晶的圆桶，没有隔离的垃圾堆放场扔满了易爆物品，垃圾掩埋场所出现的裂缝中，有毒物质渗出地面。

On the other hand, these activities control the amout and quality of freshwater, for example, water used for agricultrue and industry increase, build up reservoir and unloading directly change the balance of the ecological eviromental composition such as salinity, sand, nutrious and microelement in soil, so that control the change of heteroptera Kitog.

人类活动一方面通过建设虾池、大坝及油井平台等活动直接占用了碱蓬生长的土地，另一方面它又通过控制上游淡水的水量与水质，如农业与工业用水的增加、建水库、直接排污等活动改变着区域土壤的盐度、泥沙成分、营养物质、微量元素等生境组分的平衡，进而控制碱蓬的消长。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失