水坝

It used to happen naturally with the Nile's seasonal floods; after the completion of Egypt's High Dam in 1970 (one of the most ambitious engineering projects on earth), these seasonal floods came to an end, but a vast network of irrigation canals continued to bring gallons of freshwater to the people who worked the land, the fellahin , ensuring salinity levels remained low.

过去，这一使命自然而然地要由尼罗河的季节性洪水来完成。但是，1970年后，埃及大水坝的竣工（世界上最宏伟的工程项目之一）为这种季节性洪水划上了句号。但是，巨大的灌溉网络继续将大量的淡水送到在田间工作的人--农民的身边，从而使土壤盐度仍然维持在低水平上。

Independent Online - Small detritus-eating fish such as the flannelmouth make up 50-80 percent of total mass of fish in the Orinoco and Amazon basins but populations are declining due to overfishing, dams, deforestation and pollution.

独立在线小碎石-吃鱼等flannelmouth弥补50-80%鱼总质量奥里诺科和亚马逊盆地的人口正在减少，但由于过度捕捞、水坝、滥伐和污染。

The snow line tells the story. Grand canyon is a breech in a giant dam, the Kaibab uplift.

雪线显示，凯霸高原是庞大水坝，大峡谷是其后部。

FERC, with these regulations and the Kennebec River dam decommissioning bolstering the decision, is now "willing to consider" the value of existing dams when the time comes for relicensing.

所以当重新核准建坝资格的时候，FERC将&愿意考虑&水坝存在的价值。

Bradley dismissed it as of little consequence, just a local spoiling attack designed to disrupt First Army's offensive at the Roer dams.

布莱德利认为这个进攻并非什么了不得的大事，只是一场局部进攻，以吸引分散第1集团军对鲁尔河水坝的攻势。

Neither he nor his staff noted the obvious point that the Germans controlled the dams up stream on the Roer.

将军与其众参谋均未予关注之显著要点在于，德军控制着鲁尔河上游各道水坝。

By so doing, the Americans would arrive at the Roer upstream from the dams and thus, once across the river, be free to advance over the Cologne Plain to the Rhine without danger of controlled flooding.

通过如此运动，美军可抵达罗尔河上游水坝，一旦通过河流，就可以自由驰骋在科隆平原，奔向莱茵河，而避免人为洪水泛滥造成的危险。

Across from the Eifel the American troops were a mixed lot. The 2nd Infantry Division, in nearly continuous battle since June 7, was moving through the 99th Division on its way to attack the Roer River dams from the south.

德军从艾费尔地区出击，将穿越的美军部队是一个大杂烩。6月7日连续作战至今的第2步兵师，正在借道通过第99师阵地，以从南翼进攻鲁尔河水坝。

By February 8, U.S. Ninth Army, north of Aachen, had gotten through the Siegfried Line and closed to the Roer, but it could not risk an assault across the river so long as the Germans held the upstream dams and thus retained the capability to flood out the Roer Valley.

到2月8日，亚琛以北之美第9集团军已经穿越齐格菲防线，接近罗尔河，但是因为德军控制着上游水坝，一旦必要就可以把罗尔河谷变成汪洋一片，所以第9集团军不能冒险发起渡河攻击。

But only now are some of the dams of the colonial era being restored to use, after years of neglect and silting up.

多年失修和淤积后，人们到现在才开始对殖民时代的一些水坝进行维修。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。