The murmur of Russian translation is a constant during practices.

The number of undergraduates was roughly constant during this period.

Mediocrity was a constant in the team during the first half of the decade.

(The page size was constant during this period, but changed, along with the frequency of issue, after that year).

The number of female suicides remained almost constant during the same period.

And this attitude remained constant during all my years on earth.

The plates' appearance remained largely constant during the 37 years in which they were issued.

The relationships between the two disciplines remained constant during the 20th century, until the development of modern medical anthropology in the 1960s and 1970s.

If the current I1 may be considered constant during the time then we are entitled to talk about slow variation.

We have to make the very unreasonable assumption that the growth rate stays constant during all those 140 years.