确信,确知

positive about的用法和样例:

例句

  1. He could still go to Australia. That was something he'd often toyed with but never done anything positive about.他还能去澳大利亚,他时常会有这样的念头,但从未采取过什么积极的步骤。
  2. Be you positive about that?你肯定那是午夜吗?
  3. Can you be positive about what you hear?你对听到的话有把握吗?
  4. She was quite positive about the amount of money involved.她对所涉及的钱数十分肯定。

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