在你需要使用杯子時，你只需要扭開蓋子，然後拉長瓶身，這時你就可以用它來

在你需要使用杯子時，你只需要扭開蓋子，然後拉長瓶身，這時你就可以用它來裝水了,如果在小夥伴面前秀一下這個杯子的伸縮功能，肯定會引來不要羨慕的眼神吧。

結果 (英文) 1:

When you need to use a cup, you only need to turn on the lid, and then stretched bottle, then you can use it to hold water, if what this cup telescopic functions, will certainly lead to a small partner in front of the show do not envy look it.

結果 (英文) 2:

When you need to use the cup, you just need to twist the lid, and then elongate the bottle, then you can use it to fill the water, if in front of a small partner show the cup's telescopic function, will certainly lead not envy of the eyes.

結果 (英文) 3:

When you need to use the cup, you only need to open the lid, and then lengthen the bottle body. Then you can use it to fill the water. If you show the stretching function of the cup in front of the little friend, you will surely attract the eyes of no envy.