练习材料：
Lesson 61：Trouble with the Hubble
任务配置：
L0+L1
知识笔记：
单词积累（from口语粉碎机）
look over one's shoulders 警惕，严防
You don't have to be looking over your shoulder the whole time.
你没有必要一直这样小心提防。
meet up with 见面（按照计划）
I'm gonna meet up with the landlady in the afternoon.
我下午约了房东见面。
flip though 草草翻阅
flip out 十分气愤，异常激动
He's gonna flip out when I tell him about this.
如果我告诉他发生了什么，他会气疯的。
beyond/without compare 无与伦比
Her beauty is beyond compare.
她的美丽无与伦比。
can't compare apples and oranges 不能相提并论
My English can't compare with his.
我的英语不如他。
iridescent 色彩斑斓的，闪耀的
