n. 增加( accession的名词复数 ); 就职; 增加物; （对同盟、国际条约等的）正式加入

n a process of increasing by addition (as to a collection or group)

n (civil law) the right to all of that which your property produces whether by growth or improvement

n something added to what you already have

n agreeing with or consenting to (often unwillingly)

n the right to enter

n the act of attaining or gaining access to a new office or right or position (especially the throne)

v make a record of additions to a collection, such as a library