plus用作名词的基本意思是“正号,加号”,是可数名词。其复数形式在英式英语中是pluses,在美式英语中是pluses。引申可作“增加的事物”解,还可作“有利条件,优越之处”解。

He calculated his gains and losses of money and the result was a plus.他把所得与所亏钱数计算了一下,结果是盈余。
The pluses of his new job outweighed the disadvantages of having to move.他的新工作的种种益处完全抵得上必须搬家的不利。

用作定语
▲～+n.
 Three is a plus quantity.三是一个正数。
Her previous experience in social work is a plus factor.她先前在社会工作方面的经验是一个有利因素。
▲n.+～
All the children here are 12 plus.这里的孩子都是12岁以上。

［反义词］ prep.  minus
［词源］＜拉丁语plus(更多的,增加)

Work out the full weekly rent, plus your rates.算出一周的房租外加房地产税。
The set consists of a table plus chairs.这套家具包括一张桌子和几把椅子。
3 plus 6 is 9.三加六等于九。
What's seventeen plus nine?17加9等于多少?
If the input voltage is plus three, it comes out as minus six.如果输入的电压是正三伏,那么输出的电压便是负六伏。