becoming gradually larger at one end

例句：

1. 1. The company is making significantprogress in its new product line.
   该公司在其新产品线上取得了显著进展。
2. 2. Theeconomy is undergoing aperiod of rapid growth.
   经济正处于快速增长期。
3. 3. The team is working hardto achieve their goal of becoming the bestin the region.
   团队正努力工作，以实现成为该地区最佳的目标。