Get something straight:
把话说清楚
例句:
Please let me get it all straight.
让我把话说清楚。
Make something clear:
把话说清楚
例句:
Let me make this perfectly clear.
让我把话说清楚。
Put the words clearly:
把话说清楚
例句:
You'd better put the words clearly.
你最好把话说清楚。