1. be absent from…. 缺席，不在
2. absence of mind(=being absent-minded) 心不在焉
3. absorb(=take up the attention of)吸引…的注意力(被动语态):
be absorbed in 全神贯注于…
近:be engrossed in ; be lost in ; be rapt in ;be concentrated on ; be focused on ; be centered on
4. (be) abundant in(be rich in; be well supplied with) 富于,富有
5. access(to) (不可数名词) 能接近,进入,了解
6. by accident(=by chance, accidentally)偶然地,意外.
