New words：

gradual ['grædjuəl] adj. 逐渐的；逐步的；渐进的；平缓的
gradually ['grædjuəli] adv. 渐渐地；逐步地；逐渐地

Sample Sentences：

I make a gradual plan for him to jog.
Recovery from the disease is very gradual.

We began to know each other gradually.
We watched their ship moving gradually farther away.

New words：

degrade [di'greid] v.降级；降低…身份；侮辱…的人格；降解

Sample Sentences：

No one can degrade us except ourselves.
Don't degrade yourself by answering him.
He think that telling a lie degrade himself.

New words：

society [sə'saiəti] n.社会；学会；协会；社团

Sample Sentences：

I joined the reading society in our school last year.
A good education is very important for one's success in society.
The role of women in society has changed a lot in the past few decades.

New words：

social ['səuʃəl]
adj.社会的；社会上的；社会地位的；社交的；群居的
n.联谊会；联欢会

Sample Sentences：

Bees and ants are social insects.
Women's social status has changed much over the years.
He made many useful social contacts while he was in Beijing.
He was invited to attend a barbecue social last Saturday afternoon.

New words：

update [ʌp'deit] v. 更新
update ['ʌpdeit] n. 更新;更新的信息

Sample Sentences：

They decided to update the computer systems.
I've been really busy these days, I haven't had a chance to update my blog.

You can download updates for free.
Some people's Weibo is filled with updates about what they are doing.