Melanie was as good as her word.

媚兰说到做到。

She was as good as her word, but there was nothing which was helpful in our investigation.

她言出必行， 但对我们的调查没有任何帮助。

The old woman was as good as her word: she never spoke angrily to her, and gave her roast and boiled meats every day.

老太婆说到做到，从不跟她生气， 每天给她吃烤肉、煮肉。