crack extension

例句：

1. 1. The crack in the wall was getting wider and wider.
   墙上的裂缝越来越大。
2. 2. The company's expansion plans are causing concern among investors.
   公司的扩张计划让投资者们感到担忧。
3. 3. The new product is designed to expand the market share of the company.
   新产品旨在扩大公司市场份额。