The inscriptions on the ancient monuments have been effaced by time.

古代石碑上文字，已经因时间长久而磨蚀去。

Unfortunately, these are easily damaged by abrasion—and, not being alive, cannot regrow and repair themselves.

遗憾是，这些材料都很容易因磨蚀而损坏，而由于们不是活体组织，无法再生或自我修复。

" A much smaller percentage is created by the solar wind abrasion of the surface, " she added.

“太阳风对月球表面磨蚀造成月球大气比例要小得多，”她补充道。

If something is abrasive it's dangerously rough.

如果某物是磨蚀性，是危险地粗糙。

It actually is low on the abrasion scale.

实际磨蚀等级很低。

In both cases, we see an adaptation for grinding tough and abrasive plants.

在这两种情况下，我们都看到了对研磨坚硬和磨蚀性植物适应。

These cliff-bound glaciers, seemingly wedged and immovable, are flowing like water and grinding the rocks beneath them.

这些悬崖峭壁冰川， 看似楔入不可移动， 却像水一样流动， 磨蚀着下方岩石。

As that falls, it wears down the landscape, dissolving rocks or breaking them down in a process known as weathering.

随着时间推移， 这种侵蚀会磨蚀地貌，通过一个称为风化过程， 溶解岩石或使其分解。

Gathered ice starts flowing under its own immense weight, forming a slow-moving frozen river known as a glacier, which grinds the rocks below.

聚集冰雪在其巨大重量下开始流动，形成了一条缓慢移动冰冻河流， 即冰川，磨蚀着下方岩石。

So when the mountains, when the snow comes off of it and grinds the mountains, all the minerals are suspended in the water.

因此， 当山上雪融化并磨蚀山体时，所有矿物质都会悬浮在水中。

Including the hazards of poor posture, repetitive and strenuous movements, and the dangers of abrasive and irritating substances such as dust, mercury and sulphur.

包括不良姿势危害、重复性和繁重动危险，以及像尘埃、汞和硫这样磨蚀性和刺激性物质危险。

Built for jobs requiring a wear life of or more, it's tough enough to handle harsh impact applications with wear material designed for long life in abrasive conditions.

专为需要较长磨损寿命工设计，足够坚固， 能够承受严苛冲击应， 并采专为在磨蚀条件下长期使而设计耐磨材料。

He showed me a photo of a skull from the 2000 trip and another photo of it in the same spot five years later. Much of the bone had been ground away -- literally sandblasted.

他给我看了2000年趟行程拍摄一张头骨照片，以及五年后在同一地点拍摄另一张照片。骨头大部分都已经磨蚀掉，其实等同于被喷砂研磨掉了。

The lakes are lapping their granite shores and wearing them away, and every one of these rills and young rivers is fretting the air into music, and carrying the mountains to the plains.

湖泊正在侵蚀花岗岩湖岸并将其磨蚀殆尽， 每一条小溪和年轻河流都在将空气吹奏成音乐， 将群山带到平原。

This wretched situation, he says, was again aggravated by the galling of the chains, now become insupportable, and the filth of the necessary tubs into which the children often fell and were almost suffocated.

这种悲惨情况， 他说道，又被枷锁磨蚀再次加剧，现在已经到了难以忍受地步， 加上装粪便桶里污秽， 孩子们常常掉进去， 差点窒息。

The grain of gold dropped by his mother into his heart was beaten thin in the smithy of Parisian society; he had spread it superficially, and it was worn away by the friction of life.

他母亲在他心中种下金色种子，在巴黎社交界锻造下变得稀薄；他将其表面化了，生活摩擦最终将其磨蚀殆尽。

For as long as a forward edge of a worm's ring segment was held open by a hook, open to admit abrasive sand into the more sensitive interior, the creature would not retreat beneath the desert.

只要蠕虫环段前缘被钩子撑开，让磨蚀性沙子进入更敏感内部，这种生物不会撤退到沙漠下面。

A thrill of pleasure passed over her as she opened the drawer of an old oak cabinet, a fine specimen of the period called the Renaissance, on which could still be seen, partly effaced, the famous royal salamander.

她打开了一只老橡木柜子抽屉，这是一件文艺复兴时期精美工艺品，还能看到部分已被磨蚀着名皇家火蝾螈图案，一阵愉悦之情涌上心头。