The phrase "a mere slice" is correct and usable in written English.
It can be used to describe something that is only a small part or portion of a larger whole, often implying that it is insignificant or not substantial.
Example: "What I presented was a mere slice of the overall data, and further analysis is needed to draw meaningful conclusions."
Alternatives: "just a small portion" or "only a fraction".
The focus of Greg Barker's film is on diplomacy — a mere slice of the duties undertaken by the outgoing Administration, but more than enough to fill an hour and a half.
The movie is, moreover, a crucial reminder that photography and filmmaking don't start or end with what's happening in front of the lens: images are full-circle creations that arise from the comprehensive spectrum of influence and activity that directors and photographers create offscreen, and of which the small angle of the image is a mere slice or symbol.
While Ecuador's borders contain a mere slice of the Amazon, the rainforest here is diverse, with quiet blackwater lagoons, raging chocolately rivers, dense tree canopies and flooded forests.
Uncovered in the hamlet of Crosby Garrett, near Kirkby Stephen, in May, the helmet - complete with mask - is more than a mere slice of Roman history.
History shows that honoring exemplary art has always been a mere slice of the Oscar pie.
Many of the portals tailored to demographic groups are in fact directories, or scan mere slices of the Internet.
I felt it needed a canvas more majestic than a mere bowl of yogurt or slice of toast.
A spirited gingery peanut sauce, for instance, gilded the chicken satay, a skewer of whole succulent nuggets (not simply one threaded piece); a refreshing wrap of lettuce captured a savory sauté of duck, mango, buttery pine nuts and a lick of hoisin sauce; and a mere dust of flour crisped slices of squid tossed with salt, pepper and garlic.
It's a narrow slice of drawing today, encompassing a mere 13 artists, but it feels right for our moment of global trepidation.
The AP reports that tech consultant firm Gartner places IBM's slice of the global PC market in 2004 at a mere 5%.
In Salt Lake City, pastrami is not a mere condiment, applied sparingly, in the manner of a couple of bacon slices or a spot of mayonnaise.
