The sign [+] used to denote addition.

加号[+]。

A positive quantity.

正数。

A surplus or gain.

余额；增益。

More (by a certain amount).

较多的；额外的。

Increased (by a certain addition).

增加的；附加的。

Above zero; positive, as a quantity; more than nothing.

零以上的；正的(如正数)。

Pertaining to positive electricity.

正电的；阳电的。

Increased by.

加上；加。

With the addition of; with.

除了；和。