A picture is a fact.

解释：遵守礼制，可使国家长久，使社稷安定，让人们尊卑有别，上下有序，对后代是有益处的。

Mindfulness meditation can strengthen attentional control by training the brain to focus and resist distraction.

The light constantly changes, and that alters the atmosphere and beauty of things every minute.

农业科技研发要贴近实际需求，不能脱离生产一线。