折叠式的英文可以表示为 "foldable" 或 "collapsible"。
"Foldable" 来源于英文动词 "fold"，意思是折叠、折合或折叠起来。例如：
This table is foldable, so it's easy to store when not in use. (这张桌子是折叠式的，所以不使用时很容易存放。)
I bought a foldable bike so I can take it on the train with me. (我买了一辆折叠自行车，所以我可以和它一起坐火车。)
"Collapsible" 来源于英文动词 "collapse"，意思是坍塌、塌陷或倒塌。例如：
This chair is collapsible, so it's easy to store when not in use. (这把椅子是折叠式的，所以不使用时很容易存放。)
I bought a collapsible tent for my camping trips. It's easy to set up and take down. (我买了一个折叠式帐篷，用来野营。它很容易搭建和拆卸。)
"Foldable" 来源于英文动词 "fold"，意思是折叠、折合或折叠起来。例如：
This table is foldable, so it's easy to store when not in use. (这张桌子是折叠式的，所以不使用时很容易存放。)
I bought a foldable bike so I can take it on the train with me. (我买了一辆折叠自行车，所以我可以和它一起坐火车。)
"Collapsible" 来源于英文动词 "collapse"，意思是坍塌、塌陷或倒塌。例如：
This chair is collapsible, so it's easy to store when not in use. (这把椅子是折叠式的，所以不使用时很容易存放。)
I bought a collapsible tent for my camping trips. It's easy to set up and take down. (我买了一个折叠式帐篷，用来野营。它很容易搭建和拆卸。)