accession
/ækˈseʃn; æk`sɛʃən/ n
~ (to sth) 1 [U]
reaching a rank or position 达到某一级别或地位
celebrating the queen's accession (to the throne) 庆祝女王登基.
2
(a) [C] thing added, esp a new item in a library, museum, etc 增添物（尤指图书馆, 博物馆等的新书或展品）
recent accessions to the art gallery 美术馆最近增添的展品.
(b) [U] action of being added 增添; 增加
the accession of new members to the party 新党员的增加. accession, v [Tn]
record the addition of (a new item) to a library, museum, etc 将（图书馆, 博物馆等的新书, 新展品）登记入册.