back donating bonding

例句：

1. 1. The team needsto back up their decision with evidence.
   团队需要用证据来支持他们的决定。
2. 2. Shebacked down from the challenge and chose adifferent path.
   她放弃了挑战，选择了不同的道路。
3. 3. The companyis backing up its claimswith data.
   该公司正在用数据来支持其声明。