subsidiary fold

例句：

1. 1.The company's subsidiary has a new product line that is gaining popularity.
   该公司的子公司推出了一款新产品，正逐渐受到欢迎。
2. 2. The scientist conducted an experiment to test the hypothesis that subsidiary folds could be used to control cell division.
   科学家进行了一项实验，以测试副折叠是否可以用于控制细胞分裂。
3. 3.The book describes how the subsidiary folds of the butterfly wings are used for flight.
   这本书描述了蝴蝶翅膀的副折叠是如何用于飞行的。