slow-moving

[ sloh-moo-ving ]

/ ˈsloʊˈmu vɪŋ /

proceeding with or characterized by slow, sluggish, or leisurely movement or activity.

Origin of slow-moving

First recorded in 1635–45

Decades later, in 1974, a slow-moving train derailed, crashing in the same spot but resulting in no deaths or injuries.

The Five Deadliest Train Derailments in U.S. History |The Daily Beast |December 2, 2013 |DAILY BEAST
But I do think I notice a few differences over time, some subtle movements upon a slow-moving clock.

Don’t Call It a Frum-Back: What’s Changed After Three Months Away |David Frum |September 4, 2013 |DAILY BEAST
Beyond the river, caramel plains rolled away to the distant horizon, spotted with acacia trees and slow-moving giraffe.

Walking With Wildebeests: Exploring the Serengeti on Foot |Joanna Eede |July 9, 2013 |DAILY BEAST
Observing the slow-moving procession was akin to watching a tranquil dream float by.

Thom Browne’s Women’s Line Evolves in the Wake of Michelle Obama’s Inaugural Ensemble |Misty White Sidell |February 12, 2013 |DAILY BEAST

Iron Dome has been successful in shooting down unsophisticated, inaccurate, and slow-moving short-range rockets headed for Israel.

Why Iron Dome Can't Be Scaled-Up |Kingston Reif |November 29, 2012 |DAILY BEAST
The miller hauled his slow-moving team aside, with beery-thick objurgations and apologies.

The History of Sir Richard Calmady |Lucas Malet
If he is right it is inevitable that time, fast-moving or slow-moving, must influence the conception of events.

Criminal Psychology |Hans Gross
Like most small towns, it was slow-moving and uninteresting.

Modern Americans |Chester Sanford
Wagons and trucks stretched along the highway in slow-moving lines as far as the eye could see.

The Secret Wireless |Lewis E. Theiss
How little they could divine the future or what the immutable, slow-moving course of little things could mean to each.

The Wasted Generation |Owen Johnson