1. The four long house tables were laden with tureens of porridge

有盖盘

2. Errol!” said Ron, pulling the bedraggled owl out by the feet.

浑身湿透的

I saw a bedraggled man walking in the rain.

3. People throughout the hall were swiveling around to see who had received the Howler, and Ron sank so low in his chair that only his crimson forehead could be seen.

Swiveling 可旋转的

Most of hotels have a swiveling gate.

Crimson 深红色的

The Tibetan have a crimson face.

4. Harry had been wondering when his name was going to crop up.

突然出现

I don't know why he crop up now.