absence from 缺席，不在　
e.g. His long absence from work delayed his promotion.
? ? ? ?他長期不上班，耽誤了提升。 ?

absence of 缺乏
e.g. 1、In the absence of my commanding officer, I acted on my own initiative.
　　 ? ? ?指揮官不在場，我主動見機行事。
　　 2、In the absence of their teacher the class was in a state of anarchy.
　　 ? ? ?教師不在，班上一片混亂。

access to ……?的入口，通路　
e.g.?1、The only access to the farmhouse is across the fields.
? ? ? ? ? ? 要到那農(nóng)舍去唯有穿過田地。
? ? ? ?2、She was forbidden access to the club.
? ? ? ? ? ? 人家不允許她到那個俱樂部去。

acquaintance with 相識，了解　
e.g. 1、I have only a nodding acquaintance with Japanese.
　　 ? ? ?我對日語僅略知一二。
　　 2、The guide has some acquaintance with Italian.
　　 ? ? ?導(dǎo)游懂得一點意大利語。

action on sth 對……的作用　
e.g. evidences of glacial action on the rocks?巖石上的冰河留下的痕跡

addition to sth 增加
e.g.?1、She is a beautiful addition to the family.
　　 ? ? ?她是我們家漂亮的新成員。
　　 2、Can we finance the addition to our home?
　　 ? ? ?我們可以為你提供經(jīng)費。

admission to /into 進(jìn)入；入(場，學(xué)，會等)　
e.g. 1、How does one gain admission to the Buckingham Palace?
　　 ? ? ?怎樣才能獲準(zhǔn)進(jìn)入白金漢宮？
　　 2、Admission to British universities depends on examination results.
　　 ? ? ?英國大學(xué)入學(xué)以考試成績?yōu)閼{。

admission of sth 承認(rèn)
e.g. 1、His admission of guilt surprised everyone.
　　 ? ? ?他供認(rèn)犯罪使大家感到意外。
? ? ? ?2、The write of the letter is ipso facto an admission of guilt.
　　 ? ? ?寫此信的本身就是一種認(rèn)罪。

advance in 改進(jìn),進(jìn)步
e.g. 1、an advance in genetic engineering
　　 ? ? 遺傳工程學(xué)方面的進(jìn)展
　　 2、to advance in years
　　 ? ? 年紀(jì)增長

advantage over 優(yōu)于……的有利條件
e.g.?Now we have won an advantage over the enemy.
　　 我們現(xiàn)在經(jīng)贏得了對敵人的優(yōu)勢。