#### Answer

Two thousand and six plus a number $t$
OR
A number $t$ more than two thousand and six

#### Work Step by Step

$2006+t=2014$
$2006$ is simply "two thousand and six."
$+$ translates to "plus"
$t$ is "a number $t$"
Altogether, the verbal translation is two thousand and six plus a number $t$.
An alternative way to solve it would be to translate $+t$ as "a number $t$ more than," and translate $2006$ as "two thousand and six,' creating "a number $t$ more than two thousand and six."