doubling

名词 doubling:

1. increase by a factor of two
2. raising the stakes in a card game by a factor of 2
   同义词：double

动词 double:

1. increase twofold
   同义词：double, duplicate
2. hit a two-base hit
   同义词：double
3. bend over or curl up, usually with laughter or pain
   同义词：double over, double, double up
4. do double duty; serve two purposes or have two functions
   同义词：double
5. bridge: make a demand for (a card or suit)
   同义词：double
6. make or do or perform again
   同义词：duplicate, reduplicate, double, repeat, replicate

1. 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