1. 按向上箭头和向下箭头来让鲨鱼移动 1. Press up arrow and down arrow, the shark will move. 2. 按空格键使鲨鱼喷子弹。 2. Press space bar - Shark spray bullet. 3. 不能撞到石头，免得会输。 3. Cannot hit the rock or else your shark will die. 4. 只要可以达到500分就可以赢啦！ 4. When you reached 500 scores, you win! 5. 如果分数到150和350就会换背景。 5. If the score reaches 140and 300, the background will be changed. Update - 07 September 2021
