New Words：
frustration [frʌs'treiʃən] n. 沮丧；受挫；挫败；懊丧
Sample Sentences：
Life is full of frustrations.
Every job has its difficulties and frustrations.
I was close to tears with frustration, but I held back.
It's healthier to release frustration than to bottle it up.
New Words：
frustrate [frʌs'treit]
v.挫败；使懊丧；使懊恼；使沮丧
adj.无效的；受挫折的；被破坏的；失败了的
Sample Sentences：
The terrible weather frustrated our hopes of going out.
A poor memory frustrated her efforts to become an actress.
We taught and learned together and encouraged each other when we were frustrated.
New Words：
plaid [plæd] adj.方格花的
Sample Sentences：
It matches your plaid skirt perfectly.
Today, I wore a black and white plaid shirt, which is made of cotton.
New Words：
striped [straipt] adj. 有条纹的
Sample Sentences：
Jack's plaid shirt didn't mix well with his striped trousers.
She is wearing a striped T-shirt, blue jeans and purple shoes.
plaid [plæd] adj.方格花的
New Words：
pajamas [pə'dʒɑ:məz] n. （一套）睡衣裤
Sample Sentences：
He was wearing striped pajamas.
He had lost his case and had to borrow Tom's pajamas.
At bedtime, I take off my clothes and put on my pajamas.
striped [straipt] adj. 有条纹的