引擎

yǐn qíng engine (loanword); CL:臺|台[tai2]

留

liú to leave (a message etc); to retain; to stay; to remain; to keep; to preserve

liú old variant of 留[liu2]

liú old variant of 留[liu2]

痕

hén scar; traces

咨询

zī xún to consult; to seek advice; consultation; (sales) inquiry (formal)

邮箱

yóu xiāng mailbox; post office box

：lgooxc@hotmailcom