Many steel arch bridges cross the Mississippi in its lower reaches.

And there were some people rowing on the river.

河面上有些人正在划船。

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By skating from village to village along frozen rivers and canals.

他们就在冰冻的河面上穿梭于村与村之间。

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The surface of the River at once appeared much wider.

河面顿时显得非常宽广。

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Soliton is an important concept of nonlinear science created in the 20th century, and its origin can be traced back to the observations of the long, shallow, water waves by British naval engineer Scott Russell in 1834.

孤子概念是20世纪非线性科学的重要发现，其起源可追溯到英国海军工程师Scott Russell在1834年对河面浅水波的观察。

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Everyone shouts "kill it" when a rat is seen to run across the street. He has crossed the border into another territory. Many steel arch bridges cross the Mississippi in its lower reaches. They have crossed over to Japan.

across是介词；cross是动词。他已越过边界进入别国的领土。在密西西比河的下游许多拱形铁桥横跨河面。他们已东渡去日本了。

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When autumn came, all the water in the large and small rivers rose higher and flowed into the Yellow River. The surface of the River at once appeared much wider.

一到秋天，大河、小河里的水都涨了起来，流入黄河，河面顿时显得非常宽广。

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There was utter chaos2 of desperate cries and shootings' on the river. All at once, the army collapsed3 like a fallen building, and was routed.

河面上哭声喊声一片混乱，顿时，队伍就像房屋倒塌一样，溃不成军。

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There were two boats sailing on the river.

河面上并行着两支船。

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The piece of paper fell onto the surface of the river and drifted away out of sight.

这张纸掉到了河面上，漂走看不见了。

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The trees grow so tall that they hang over the river from either side.

树长得很高，从河的两岸悬在河面上。

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It rained so heavily that the river rose as high as the banks.

雨下得河面都平了槽。

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The air temperature was well below freezing, and lakes and rivers froze over

气温远远低于零度，湖面和河面都封冻了。

柯林斯高阶英汉双解学习词典

The bank sloped down sharply to the river

河岸到河面的斜坡非常陡。

柯林斯高阶英汉双解学习词典

Eighteen boats plied the 1,000 miles of river along a trading route

18艘船沿着贸易航线往返于1,000英里的河面上。

柯林斯高阶英汉双解学习词典

The light bounced off the river and dazzled her.

河面上银波粼粼，令她目眩。

《牛津高阶英汉双解词典》

Under clear sky, the fish Xiang shallow end of egrets flying Huan, blinking a little bit of golden river surface, and occasionally a few leaves fishing boat in the cruising, it seems a painting.

晴空下，鱼翔浅底，白鹭欢飞，闪烁着点点金光的河面上，偶尔有几叶渔舟在游弋，似一幅画。

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As sediment deposition, formed in the river surface Gezhouba, Xiba the two islands, divided into the Yangtze River, Jiang and the Sanjiang.

由于泥沙沉积，在河面上形成葛洲坝、西坝两岛，把长江分为大江、二江和三江。

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Not only the size of the vaccinated scar and the rate of tuberculin conversion at the 12th week after BCG vaccination, but also lymph nodes purulence caused by BCG inoculation at three different ages in the infants had been observed.

作者观察了出生后不同时期的婴儿，接种卡介苗后12周的卡痕和结素反应，以及接种后一年内淋巴结反应。

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Their biological characteristics via immunohistochemistry and mineralization assay were investigated in vitro. Results Cells explanted from new-born bovine gingiva cultured in special medium could express mineralization-related non-collagen proteins, such as osteopontin, sialoprotein, osteonectin and osteocalcin.

结果牙龈结缔组织来源细胞在条件培养基中体外培养14天后，骨桥蛋白、骨涎蛋白、骨粘结素及骨钙素等与矿化相关的非胶原蛋白表达阳性；

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It was found that the average diameter of tuberculin test reaction of the BCG vaccinated at 3 to 6 months of age was obviously bigger than those within 3 days and 2 to 3 months.

发现出生后3～6个月的婴儿，接种后其结素反应平均直径明显大于出生后3天内和1～3个月的婴儿（P

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