然后在罐子顶部覆盖一层透明的塑料袋，用橡皮筋把塑料袋箍紧。

Then cover the top of the pot with a see-through plastic bag.

youdao

然后在罐子顶部覆盖一层透明的塑料袋，用橡皮筋把塑料袋箍紧。

Then cover the top of the pot with a see-through plastic bag.

youdao