additions
An addition to something is a thing which is added to it.
This is a fine book; a worthy addition to the series.
这是一本好书——是对这套丛书有价值的增补。
This plywood addition helps to strengthen the structure.
这张添加的胶合板帮助加固结构。
The addition of something is the fact that it is added to something else.
It was completely refurbished in 1987, with the addition of a picnic site.
它于1987年被完全翻修,增添了一个野餐场所。
the addition of vitamin C to fruit juices.
在果汁里添加的维生素C。
Addition is the process of calculating the total of two or more numbers.
simple addition and subtraction problems using whole numbers.
运用整数的简单加法和减法题。
in addition
You use in addition when you want to mention another item connected with the subject you are discussing.
The website provides regional weather reports, a shipping forecast and gale warnings. In addition, visitors can download satellite images of the US.
这个网站提供地区天气报道、出航预测和大风警报。另外,访客可以下载美国的卫星图像。
In addition to the 48 constellations known since ancient times, Bayer showed 12 new constellations.
除了自古已知的48个星座之外,拜尔描述了12个新的星座。