Lesson 43 Are there strangers in space?

宇宙中有外星人吗？

First listen and then answer the following question: What does the 'uniquely rational way' for us to communicate with other intelligent beings in space depend on?

Lesson 44 Patterns of culture

单词列表

13
Mercury/ ˈmɜːkjəri /n. 水星
Hydrogen/ ˈhaɪdrədʒən /n. 氢气
prevailing/ prɪˈveɪlɪŋ /adj. 普遍的
radio astronomer//n. 射电天方学家
megacycle//n. 兆周
uniquely//adv. 唯一地
rational//adj. 合理的
radio frequency//n. 无线电频率
cm//n. 厘米
emission/ ɪˈmɪʃ(ə)n /n. 散发
intersteller//adj. 星际的
rendezvous//n. 约会地点
encounter/ ɪnˈkaʊntə(r) /n. 相遇