Original: When the probe arrived in the Saturnian system in 2004, it was hoped that hydrocarbon lakes or oceans might be detectable by reflected sunlight from the surface of any liquid bodies, but no specular reflections were initially observed.
Simplified: When the probe arrived in the Saturnian system in 2004, scientists hoped that hydrocarbon lakes or oceans might be seen in reflected sunlight from the surface, but no reflections were found.