私下: in private...
鸭子: duck, male prostitute (slang)...
校园: campus...
丝: a thread (of cloud, smoke etc), a bit, an iota, a hint (of sth) etc...
装: adornment, to adorn, dress, clothing, costume (of an actor in a play), to play a role, to pretend, to install, to fix, to wrap (sth in a bag), to load, to pack...
