John and Mary ate their dinner cold.是什么意思？

John and Mary ate their dinner cold.

约翰和玛丽吃了凉的饭菜。

John

n. 茅房，厕所；

例句
He was appointed Apostolic Administrator of Minsk by Pope John Paul II.
他被教皇约翰·保罗二世任命为明斯克区的宗座署理。

and

conj. 和，与，而且，于是，然后，因此；

例句
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。

Mary

n. 玛丽（女子名）；

例句
When Mary finally appeared, she made her apologies to Mrs Madrigal.
最终露面时，玛丽向马德里加尔夫人表示了歉意。

ate

abbr. Automatic Test Equipment 自动试验设备；v. 吃（过去式）；

例句
Sybil ate three biscuits, one after the other...
西比尔接连吃了3块饼干。

their

pron. 他（她，它）们的，在提及性别不详的人时，用以代替 him 或 her；

例句
Their permissiveness toward their children reflects the wild abandon of their own lives.
他们对孩子的放任折射出他们自身生活的放浪形骸。

dinner

n. 正餐，主餐，宴会，晚餐；

例句
At the dinner table, my father would go on and on, showing off, aggrandising himself...
我父亲在餐桌上总是滔滔不绝地炫耀并吹嘘自己。

cold

adj. 寒冷的，冷淡的，无情的，失去知觉的，[艺]有冷感的，冷色的；n. 寒冷，感冒，伤风；adv. 完全地；

例句
It was a cold room, but it afforded a fine view of the Old City.
这房间虽然很冷，但是它能让人将古城的景致尽收眼底。