为什么秦皇岛港口冬天不结冰，因为秦皇岛的海流，是从黄河里的一股暖流，所以就不结冰。

                                                                                             小池

                                                                                           杨万里

                                                                                  泉眼无声惜细流   

                                                                                  树阴照水爱晴柔        

                                                                                  小荷才露尖尖角

                                                                                  早有蜻蜓立上头