New words：
trade [treid]
n.贸易；交易；行业；商业
v.买卖；做生意；做买卖；营业
Sample Sentences：
Which is your trade?
China does a lot of trade with many countries.Trade between the two countries has increased.
Our products are now traded worldwide.
She traded three apples for a bunch of bananas.
worldwide ['wə:ldwaid]
adj.影响全世界的；世界各地的
adv.全球性地；世界范围地
New words：
bravery ['breivəri] n.勇敢；勇气
Sample Sentences：
He got an award for bravery.
The soldier earned a medal for bravery.
Several soldiers were decorated for bravery.
His bravery should be an example to all of us.
New words：
afford [ə'fɔ:d] v. 提供；给予；买得起；承担得起(后果)
Sample Sentences：
Can we afford a new car?
Dancing affords us pleasure.
We can't afford to pay such a price.
The country can't afford another flood.
New words：
absence ['æbsns] n. 缺席；缺乏；不在；不存在
Sample Sentences：
We must invent an excuse for our absence.
What was the real reason for your absence?
His long absence raised fears about his safety.
Please look after my house during my absence.
He could not account for his absence from school.
New words：
account [əˈkaʊnt] v.认为是；视为；解释；导致
Sample Sentences：
His illness accounts for his absence.
Her brother was accounted a great scholar.
Too much rain accounted for the poor crop.
He could not account for his foolish mistake.
In English law a man is accounted innocent until he is proved guilty.
absence ['æbsns] n. 缺席；缺乏；不在；不存在