When erosion first appeared in the history of agriculture, the farmers sometimes moved on to another place, leaving the wasted land to recover as best it could;some times they sank into poverty, trying to make a living from the barren soil.

在农业生产历史上,最初出现土壤侵蚀时,有时农民就迁往别处,让废弃的土地尽快恢复地力。有时候,农民只好受穷,靠耕种贫瘠的土地糊口。

属类：行业术语-农业-土壤与肥料

the deterioration of land into marshes, earth subsidence, the damage of vegetation, soil erosion , the drying up of sources of water , the extinction of species and the occurrence and development of other ecological imbalances,

沼泽化、地面沉降和防治植被破坏、水土流失、水源枯竭、种源灭绝以及其他生态失调现象的发生和发展,

属类：法学专业-中国法律-环境保护法

These rock fragments which are called sediments are derived from the weathering and erosion of older rocks.

这些被称为积物的岩石和矿物碎屑是较古老的岩石经风化和剥蚀后形成的。

属类：工程技术-地质-地质与勘探

This problem becomes acute in the case of processes consuming large amounts of energy, such as the erosion processes.

这一问题在耗能较大的生产中,如腐蚀加工,尤为突出。

属类：产品说明书-机械产品说明-

While they are more compact than rising stem valves, the stem threads are always exposed to flowing media, allowing for possible erosion /corrosion. Open/close indication is not provided with this design.

这种结构形式比明杆更加紧凑,阀杆螺纹总是暴露在流体介质中,容易受到侵蚀或腐蚀。这种结构的阀门无法显示开启/关闭状态。

属类：产品说明书-热水器说明-

The rock is resistant to weathering and erosion

这种岩石不易风化和侵蚀。

属类：综合句库--

gradual erosion ;a gradual slope.

逐渐地腐蚀;缓坡

属类：综合句库--

The natural ecology continues to deteriorate, treatment of water and soil erosion has progressed slowly, and the trend of desertification has intensified

自然生态恶化的趋势仍在发展,水土流失治理进展缓慢,沙漠化扩张的势头日益加剧。

属类：综合句库--

(fig)the steady erosion of the President's credibility

总统的威信日渐丧失.

属类：综合句库-典型例句-

Nowhat bothers me most is something not so easily fixed--the erosion of the equity-based culture that emerged in recent years

最令我担心的是一种不太容易扭转的状况,即

属类：综合句库--