The RIM program encourages farmers to keep farming their productive land but sell the marginal land that's susceptible to soil and water erosion.

该项目鼓励农民在保证粮食产量同时，将易边际地卖出。

Cannonballs smashed through timbers weakened by nearly a year at sea.

在海上漂泊近一年后，船体因长期海而变得脆弱，炮弹轻易地穿透了这些不堪一击木板。

In Washington, protesters from the city and elsewhere are demonstrating against what they say are assaults on the U.S.'s democratic institutions, against trade tariffs, the firings of federal employees, and executive actions cracking down on immigration, among other issues.

在华盛顿，来自该市及其他地区抗议者正在示威，他们反对一系列问题，包括他们所称美国民主制度、易关税、联邦雇员解雇以及政府对移民严厉打击等。

The weight on the wheels on the lower slope and the track depth are significantly reduced, making it suitable for use during heavy rains or in areas prone to erosion.

在下坡路段， 轮子压力和履带深度显着降低，使其适合在大雨或易区域使用。

Each has been eroded by water over millions of years...

每一个都是在几百万年间流而成。