bear building-up

例句：

1. 1. The team has beenbuilding up for the upcoming game.
   这个团队一直在为即将到来的比赛做准备。
2. 2. The economyis building up slowly but steadily.
   经济正在缓慢但稳定地增长。
3. 3. Theyare accumulating knowledgein their field of study.
   他们在他们的研究领域中积累知识。