addition
/əˈdɪʃn; ə`dɪʃən/ n
1 [U] adding, esp calculating the total of two or more numbers 加（尤指计算两个或两个以上数目的总和）.
2 [C] ~ (to sth) person or thing added or joined 增加的人或事物
Such an outfit would be a useful addition to my wardrobe. 在我的服装中添置这一套会有用的.
They've just had an addition to the family, ie another child. 他们家 刚刚又添了一口人（另一个孩子）.
Ann will be a very useful addition to our team. 安来到我们队给我们增加了一员干将.
3 (idm 习语) in addition (to sb/sth) as an extra person, thing or circumstance 加之; 除...之外
In addition (to the names on the list) there are six other applicants. 除此（名单上的名字）之外, 还有六个申请人.