(located) at; (to be) in; to exist; in the middle of doing sth; (indicating an action in progress)[cedict]
消毒
xiāo dúㄒㄧㄠ ㄉㄨˊ
disinfect; sterilize[cedict]
那儿
nà ㄋㄚˋ
there[cedict]
沾染
zhān rǎnㄓㄢ ㄖㄢˇ
to pollute (often fig.); to be infected by; to gain a small advantage[cedict]
上
shàngㄕㄤˋ
on; on top; upon; first (of two parts); previous or last (week etc); upper; higher; above; previous; to climb; to go into; above; to go up; to attend (class or university); third tone of putonghua[cedict]