semi-auto folding umbrella的用法和樣例：
例句
- Where do I go to buy a foldaway umbrella?
哪兒能買(mǎi)到折疊傘呢？ - All the sticks of the support can be designed as stretchable sheath-shaped tubes like that of Folding Umbrella, for easily adjusting the width and height of the support.
支架的所有桿件均可設置成可以伸縮的結構，該伸縮結構可以采用類(lèi)似折疊傘的伸縮套桿，從而能夠很方便地調節支架整體的寬度和高度。
