当我挤压瓶子时潜水艇会上升，

                                                                                   刚放在上面时是漂浮状态。

                                                                                 这是浮沉子游戏。

                                                                                   这是由于大气压强的原理。

                                                                                   我会用吸管和回形针制作潜水艇，

                                                                                         这个游戏真好玩。

                                                                                  科学小游戏真有趣。