"That's
the thing" 通常用来指代之前提及过的某个重要话题或观点，强调这个话题或观点是关键所在，或者解释一些复杂情况的关键之处。 That's the thing: I'm not sure if I can trust him.
That's the thing—I don't think she understands the situation.
That's the thing: We need to find a solution to this problem.
That's the thing—I forgot to tell you about the party tomorrow.
That's the thing: We can't afford to wait any longer.
That's the thing—I'm not comfortable with the arrangement.
That's the thing: We need to prioritize our goals.
That's the thing—I'm not convinced that's the best option.
That's the thing: We have to be honest with ourselves.
That's the thing—I don't think we have enough information to make a decision.
