在弯曲航道修建过河建筑物，其跨度大小对船舶航行有重要的影响。

When a structure is built over the curved, the structure span will greatly affect the ship (or fleet) navigation.

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为解决弯曲航道的设计问题，从确保船舶航行安全的角度，重点分析对航道宽度的要求；

To solve the design matter related to channd bends, the basic requirements of the width in accordance with the need of safety navigation is analyzed.

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南美洲正在弯曲，并被撕开，这将使得布宜诺斯艾利斯的海上航道扩张。

America is bending, pulling apart so that the seaway at Buenos Aires will be expanded.

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