Each play has a theme or central idea which the playwright hopes to get across through dialogue and action.
每个剧目都有一个主题或中心思想，剧作家希望通过对话和行为让人们理解这些主题或思想。
2
Synapses are the junctions between nerve cells, and their action is central to learning and memory. But they are also, he says, the most fragile parts of the brain.
突触连接神经细胞，其活动对于学习和记忆是很重要的，但它们也是，他说，大脑最脆弱的部分。
3
The film's Hong Kong director, Jingle Ma, says the new 115-minute Mulan is a sweeping melodrama that depicts the central character as an action hero, dutiful daughter and wistful romantic.