New words：

abolish [əˈbɒlɪʃ] v.废除；消灭；撤销

Sample Sentences：

Bad customs should be abolished.
The government decided to ​​abolish​​ the old tax law last year.
Our community decided to ​​abolish​​ plastic shopping bags last month.

abolition [ˌæbəˈlɪʃn] n.废止；废除

New words：

aboard [əˈbɔrd] adv./prep. 在(船、飞机、公共汽车、火车等)上;上(船、飞机、公共汽车、火车等)

Sample Sentences：

He was already aboard the plane.
I want to know how she got aboard my ship.
The plane crashed killing all 157 passengers aboard.
He spent 12 days aboard the International Space Station.

New words：

abnormal [æbˈnɔːml] adj. 不正常的;畸形的;反常的;变态的

Sample Sentences：

It's abnormal for a cat to hate fish.
This warm weather is abnormal for February.
The doctor said my temperature was abnormal.

New words：

abandon [əˈbændən] v.放弃；抛弃；废弃；遗弃

Sample Sentences：

They abandoned the match because of rain.
The baby had been abandoned by its mother.
Snow forced many drivers to abandon their vehicles.
At the end of the road they see an old, abandoned house.

New words：

monitor [ˈmɒnitə(r)]
v.监控；监视；监听；检查
n.班长；监测仪；屏幕；显示屏

Sample Sentences：

A monitor is a basic output device.
Your doctor will monitor your blood pressure.
The monitor plays an important role in our class.
The details of today's flights are displayed on the monitor.