视频对话：
Well, they can't know.
当然，他们不可能知道。
People are fragile like tea cups.
人们就像易碎的茶杯。
All around them, the world is changing...
在他们周围，世界日新月异……
本期学习词汇：
fragile
adj.易碎的，脆的；虚弱的
例句：
1. He leaned back in his fragile chair.
他仰靠在那把摇摇晃晃的椅子上。
2. The fragile economies of several southern African nations could be irreparably damaged.
一些南非国家的脆弱经济可能会被彻底破坏，无法挽回。
3. The Prime Minister's fragile government was on the brink of collapse.
首相领导的脆弱的政府处在瓦解边缘。
4. His overall condition remained fragile.
他的整体情况还是很不稳定。
5. The haircut emphasised her fragile beauty.
发型突出了她的精致之美。