As the water rises and falls in the neck of the bottle, use the rubber band to mark the new level.

由于水上升和下降的瓶子的颈部，用橡皮筋，庆祝新的水平。

youdao

As the water rises and falls in the neck of the bottle, use the rubber band to mark the new level.

由于水上升和下降的瓶子的颈部，用橡皮筋，庆祝新的水平。

youdao