The cell contained traces of the gas that Harry had encountered.
He was killed and dismembered in a bathtub that turned out to contain traces of at least 14 people.
Historians construct and use archives that contain traces of the past.
Every thing was built on a scale too small and the air contained thick traces of ammonia gas, anyway.
At the very least it contained traces of deadly radiation.
The chances are, notes in your wallet at this moment will contain traces of cocaine.
A machine oil stain could also contain traces of metal, for example.
It dates to at least the 14th century and contains traces of 15th-century frescos.
Members are allowed to eat meat that still contains small traces of blood remaining.
