addn.

中文含义：附加、增加

英语词性：缩写

美式发音： /ˈædn/

同义词：additional, extra, supplementary

易混淆单词：add, addendum

双语例句：

1. The addn. information that you provided was very helpful. (你提供的额外信息非常有帮助。)

2. The price of the car does not include any addn. fees. (汽车价格不包括任何额外费用。)