"shallow trough" is a correct and usable phrase in written English.
It can be used to describe a low and narrow channel or container, typically used for holding liquids or for feeding animals. Example: The farmer filled the shallow trough with water for the thirsty pigs.
It gets started when plaque builds up in the shallow trough between the tooth and the gum.
At one end, more than 100 candles suspended on thin steel wires hung as if floating in air over a shallow trough of water.
The outdoor pool — really a shallow trough in the park, one foot at its deepest end — had been full of kids, "splashing all ways, causing madness".
(D) Close-up view of northeast Deuteronilus Mensae showing a low-angle ramp marked by backwash channels (part of member lHl1), which is cut by a shallow trough.
Basin, in geology, a broad shallow trough or syncline, a structure in the bedrock, not to be confused with a physiographic river basin, although the two may coincide.
Pinched and idly gestured toward a plinthTwo centuries of customers have careworn To a shallow trough not quite my length, I'm forced to burrowInto a pose much more flagellant than faun.
The irregularly shaped blobs are roughly 12 miles across, bordered by shallow troughs.
Champlevé enamel work requires a skilled artisan to make shallow troughs in a copper base where he wants to put color.
Clarified wort is cooled, formerly in shallow troughs or by trickling down an inclined cooled plate but now in a plate heat exchanger.
The shallow troughs crisscrossing the surface might be signs of convection, caused by heat within the planet, or might be cracks caused by surface contraction.
Veined with shallow troughs, some with a mysterious dark material in them, the plain is bordered by an area of pitted surfaces and lies in a huge region shaped like a heart.
