plus

来自拉丁语plus,更多，更大，来自PIE*pele,装满，填满，词源同fill,full.用于数学名词加号，引申词义优势，长处。

plus (n.)

1570s, the oral rendering of the arithmetical sign +, from Latin plus "more, in greater number, more often" (comparative of multus "much"), altered (by influence of minus) from *pleos, from PIE *pele- (1) "to fill" (see poly-).

As a preposition, between two numbers to indicate addition, from 1660s. [Barnhart writes that this sense "did not exist in Latin and probably originated in commercial language of the Middle Ages."] Placed after a whole number to indicate "and a little more," it is attested from 1902. As a conjunction, "and," it is American English colloquial, attested from 1968. As a noun meaning "an advantage" from 1791. Plus fours (1921) were four inches longer in the leg than standard knickerbockers, to produce an overhang, originally a style associated with golfers. The plus sign itself has been well-known since at least late 15c. and is perhaps an abbreviation of Latin et (see et cetera).

1. Three plus six makes nine.

3加6等于9.(注意,此句中的plus是 介词,plussix是介词短语,作three的 定语,因此,动词用makes, 不用make ) .

来自《用法词典》

2. There are only 35 staff to serve 30,000-plus customers.

只有35名员工，却要为3万多顾客服务。

来自柯林斯例句

3. All vessels were to be built on a cost-plus basis.

所有的船只都将在成本加利润的基础上制造。

来自柯林斯例句

4. Experience of any career in sales is a big plus.

任何销售领域的工作经验都是一大优势。

来自柯林斯例句

5. Send a cheque for £18.99 plus £2 for postage and packing.

请寄上18.99英镑的支票，外加2英镑的邮资和包装费。

来自柯林斯例句