1.absence from 缺席，不在 如：
His long absence from work delayed his promotion.
2. absence of 缺乏 如：
In the absence of my commanding officer, I acted on my own initiative.
In the absence of their teacher the class was in a state of anarchy.
3. access to ……的入口，通路 如：
The only access to the farmhouse is across the fields.
She was forbidden access to the club.
4. acquaintance with 相识，了解 如：
I have only a nodding acquaintance with Japanese.
The guide has some acquaintance with Italian.
5. action on sth 对……的作用 如：
evidences of glacial action on the rocks
6. addition to sth 增加 如：
She is a beautiful addition to the family.
Can we finance the addition to our home?
7. admission to /into 进入；入(场，学，会等) 如：
How does one gain admission to the Buckingham Palace?
Admission to British universities depends on examination results.
8. admission of sth 承认 如：
His admission of guilt surprised everyone.
The write of the letter is ipso facto an admission of guilt.
9. advance in 改进,进步，如：
an advance in genetic engineering
to advance in years
10. advantage over 优于……的有利条件 如：
Now we have won an advantage over the enemy.