freeloader

n.

不速之客，揩油的人；

复数：freeloaders

Life as a freeloader
Viruses: foe, freeloader or friend?
When There'sa Freeloader on Your Team
FreeLoader: Scavenging Desktop Storage Resources for Scientific Data
FreeLoader: An Open Source Universal Testing Machine for High-Throughput Experimentation
Dynamics of a producer-freeloader ecosystem on the brink of collapse
Watermarking for detecting freeloader misbehavior in software-defined networks
Fighting the freeloader effect : cooperation, attitude, and achievement in a Jesuit secondary math classroom /
Stomosis arachnophila sp. n., a new kleptoparasitic species of freeloader flies (Diptera, Milichiidae)
I Was a Wi-Fi Freeloader: Small Wireless Networks Are Everywhere in the City. Some Net Activists Want You to Know Where the Free Zon...