• 1. The Sure Thing: 犯贱情人 | 校门外 | 肯定的事
• 2. the sure-thing principle: 确凿性原则

• 1.Instead, they are looking for "the sure thing", the thing that can give them success with the least amount of uncertainty.
  相反的，他们还在寻求“事实”，这些事实和一些未经确认的事实一起为企业家带成成功。
  dict.yoduao.com
• 2.Then we need to proofread the whole thing and make sure all selling points are watertight.
  然后我们需要校对整个内容，确保所有卖点都无懈可击。
  dict.yoduao.com
• 3.No one knows if Spot will stay after the pandemic is gone, but one thing is for sure: the robot is the hardest working dog in the world.
  没人知道疫情结束后斯伯特会不会留下，但有一件事是肯定的：这个机器人是世界上最勤劳的“工作犬”。
  dict.yoduao.com

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