名词短语
中文翻译：港口入口
同义词：
['port entrance', 'harbor entry', 'dock entrance']
例句：
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1.The ship's captain entered the harbor entrance to make a landing.
船长进入港口入口以便登陆。
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2. The harbor entrance was crowded with ships waiting to enter the port.
港口入口挤满了等待进入港口的船只。
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3.The harbor entrance is guarded by a large security checkpoint.
港口入口由一个大型安全检查站守卫。