Harry's heart sank like a stone, but Hagrid merely chuckled.

哈利的心陡地一沉，但海格只是笑笑。

But in my mind, I was sinking like a stone.

但在我心中，我像个石头一样不断下沉。

But as he sat among the millionaires with Mell, his heart and his confidence sank like a stone.

但是当他们夫妇落座于百万富翁之间，他的心情与信心一点点的沉了下去。