a. 现象的, 能知觉的, 异常的, 显著的, 惊人的

phenomenon/phenomenal/symptom/symbol/symbolic/symbolize
记忆：
1. phenomenon [ fi5nCminEn ] （复数phenomena） n. 现象 Can you analyze these phenomena for us?你能否为我们分析一下这些现象？
2. phenomenal [ fi5nCminl ] adj. 显著的, 现象的 You should go through the phenomenal signs and learn the nature of it. 你应该透过表面现象而了解事情的本质。
3. symptom [ 5simptEm ] n. 症状, 征兆 Fever is a symptom of SARS. 发烧是非典的一种症状。
4. symbol [ 5simbEl] n. 符号, 记号, 象征 More and more people take money for a symbol of success. 越来越多的人把钱当作是成功的象征。
5. symbolic [ sim5bClik ] adj. 象征的, 符号的 The president gave him a symbolic hug. 总统象征性地拥抱了他一下。
6．symbolize [ 5simbElaiz ] vt. 象征 The flag on the island symbolizes the sovereignty of the country. 岛上的旗帜象征着国家的主权。
另类阅读：
There are many strange phenomena. Some of them are symptoms of social problems while some of them are symbols of social changes.