The Montgolfier brothers began experimenting by filling small paper bags with smoke.

蒙戈尔菲耶兄弟的实验是把烟装进小纸袋。

Their adviceplace : Place the fruit in a fruitball fruit bowl or in a paper bag with the topful the top folded down.

将水果放在果碗里或者是一只纸袋里将口起来。