不易: not easy to do sth, difficult, unchanging...
钉: nail, to follow closely, to keep at sb (to do sth)...
情人: lover, sweetheart...
听众: audience, listeners...
忙: busy, hurriedly, to hurry, to rush...
呼啸: to whistle, to scream, to whiz...
皇上: the emperor, Your majesty the emperor, His imperial majesty...
零件: part, component...
然后: after, then (afterwards), after that, afterwards...
窗帘: window curtains...