殘餘沾染

residual contamination

to destroy / to spoil / to ruin / to injure / cruel / oppressive / savage / brutal / incomplete / disabled / to remain / to survive / remnant / surplus

remnant / relic / residue / vestige / surplus / to remain / to leave surplus

extra / surplus / remaining / remainder after division / (following numerical value) or more / in excess of (some number) / residue (math.) / after / I / me

surname Yu

variant of 餘|余[yu2], remainder

to moisten / to be infected by / to receive benefit or advantage through a contact / to touch

variant of 沾[zhan1] / to moisten

to pollute (often fig.) / to be infected by / to gain a small advantage

to dye / to catch (a disease) / to acquire (bad habits etc) / to contaminate / to add color washes to a painting