addition

The teacher gave the children a quiz to test their skills in basic addition.

(Chinese) 老师给孩子们做了一次测验，以测试他们的基础加法技能。

He learned addition very quickly, knowing that 2+2 equals 4.

(Chinese) 他学加法很快，知道 2+2 等于 4。

The addition of a new wing to the hospital provided fifty more patient beds.

(Chinese) 医院扩建的新侧楼增加了五十个病床。

This comfortable new sofa is a great addition to our living room.

(Chinese) 这张舒适的新沙发是我们客厅的一件很棒的新家具。