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1·The river level fluctuates greatly. Therefore we designed an intermediating pool that draws its water from the river.

河流水位波动较大，因此，我们设计了一个中间池，从河里引进水流。

2·Hundreds of thousands of people were evacuated as the river level rose and broke through waterlogged dikes and embankments.

成千上万人因水位上涨和堤坝浸水而疏散。

3·If the conditions were right - a steady rain to raise the river level and no moon - they could catch several tons of eel in one night.

如果条件得当，在雨夜，大雨导致河水上涨，这样一个晚上就可以捕获大量的鳗鱼。

4·The groundwater is influenced severely by the river level and the river infiltration often causes in difficulties of drains and makes the crops along the riverside suffer from subwaterlogging.

河水位对堤内地下水有重要的影响，且河水向二岸的侧渗常导致堤内排水困难，使农作物遭受渍害。

5·The level of pollution in the river was falling.

该河流受污染的程度其时正在降低。《柯林斯英汉双解大词典》

6·Heavy rain and melting snow have swollen the river to its highest level in decades.

暴雨和积雪融化已经使该河流水位到达几十年来的最高水平。

7·At the time of the floods, the river and lake were at the same level and connected through a gap in the hills near the modern villages of el-Lahun and Hawara.

洪水来临时，湖和河在同一水平面上，并且通过艾尔拉罕和哈瓦拉现代村庄附近山脉的一个裂口连接起来。

8·This is my report: One of the major problems in the Biramichi river is that the level of oxygen in the water is too low.

这是我的报告：比拉密契河的主要问题之一是水中的氧气含量太低。

9·The water level of the Mississippi River is already 6.5 feet below normal.

密西西比河的水位已经比正常水位低6.5英尺。《柯林斯英汉双解大词典》

10·South Africa raised the flood-warning level for its central Orange River area today as water levels in places were expected to reach the highest since 1996.

南非提高了洪水警报级别，奥兰治河水位已经达到了自1996年已来的最高位。