这只渡船轻快地划开水面航行。

The ferry cut merrily through the water.

《柯林斯英汉双解大词典》

眼下在水面航行的最大船舶是油轮。

The biggest ships afloat now are oil tanks.

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文中介绍了关于三种不同声源的声图像试验及试验结果，即：水下五元十字形声源的声图像；某型水下发动机的声图像和一艘水面航行船模的声图像。

Three experiments are described in the paper, i. e. the sound image of cross array with five elements, the sound image of underwater engine, and the sound image of moving ship model.

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