definite

It’s impossible for me to give you a definite answer.

我不可能给你明确的答复。

We need to record sufficient data to enable definite conclusions to be reached.

我们需要记录足够的数据，才能得出明确的结论。

He’d shown definite signs of resigning himself to the situation.

他明显表现出安于这种状况的样子。