求翻译：我打算在7月15日之前将作业做完。7月16日到7月20日在家休息。7月21日到7月25日去海边玩，我将会看见许多的贝壳，贝壳上的花纹各不相同，还有螃蟹，海边的螃蟹有许多种颜色，比如，红色的，深绿色的，它们只会横着走路，但是走得很快是什么意思？

I intend to homework before July 15. July 16 to July 20, rest at home. July 21 to July 25, to the beach to play, I will see a lot of shells, shell patterns vary, there are crabs, sea crabs have many colors, such as red, dark green, they will only walk sideways, but walked soon