折叠的英文：collapse、fold。
1、collapse：v. 倒坍；崩溃；倒下；暴跌、n. 崩溃；暴跌。
2、fold：v. 折叠，对折；交叠；包；失败，垮台，关闭、n. 褶痕；褶皱；羊圈。
例句
1、Does this chair fold?这把椅子可以折叠吗?
2、The tertiary structure refers to the way the protein is bent and folded back on itself in space.三级结构指的是蛋白质自身的弯曲和折叠的方式。
3、Smashing: A bindery process used to compress air out of the folded sheets. See Nipping.压平:装订工序之一。它把折叠后，纸页间的空气压出。
4、A printed,usually folded handbill or flier intended for free distribution.散页印刷品免费散发印刷好的通常是折叠的传单或宣传物
5、yeast-raised dinner roll made by folding a disk of dough before baking.酵母发酵的正餐面包卷，烘焙前先把生面饼折叠起来。
6、A fold in cloth made by doubling the material upon itself and then pressing or stitching it into place.褶皱衣服上的褶，通过将衣服的材料对折叠，然后在衣料上再压紧或缝在一起而制成。
7、Gatefold: Also called Fold-out, Thrown-out.对门折：折叠插页。
8、Fold or unfold this outline.折叠或展开此概要.
9、Paper folds more easily than cardboard.纸比纸板更易折叠。
10、Folding and cutting darts.折叠和裁剪省道。