Complex sentence: Fluorosurfactants, or fluorinated surfactants, are polyfluorinated or fluorocarbon-based surfactants that are more effective at lowering the surface tension of water than comparable hydrocarbon surfactants.
Split into simpler sentences: Fluorosurfactants, or fluorinated surfactants, are synthetic chemical compounds that have multiple fluorine atoms. As surfactants, they are more effective at lowering the surface tension of water than comparable hydrocarbon surfactants.