练习材料：
Lesson 20-（2）：Pioneer pilots
任务配置：
L0+L1
知识笔记：
单词积累（from 口语粉碎机）：
vigorous 精力充沛的
adverse circumstance 逆境
adverse effect 副作用
adverse publicity/criticism 负面报道/非议
in/ under the circumstances 在这种情况下
He received a lot of adverse publicity/ criticism about the behavior.
这个行为，给他带来了很多负面报道。
We were obliged to go through force of circumstance.
形势所逼，我们不得不走。
pick up the check/ bill /tab 付账
The company picked up the tab for his hotel room.
公司为他付了旅馆费用。
nip sth in the bud 把。。。扼杀在萌芽状态
The boss wants to nip her behavior in the bud.
老板希望尽早纠正她的这个坏习惯。
