extension of vertebral column

例句：

1. 1. The company's new product line is designed to extend its reach in the market.
   该公司的新产品线旨在扩大其在市场的份额。
2. 2. The bridge was extended to accommodate more vehicles on the road.
   为了容纳更多的车辆，这座桥被延长了。
3. 3. The scientist made an extension of his theory based on new evidence.
   这位科学家根据新的证据扩展了他的理论。