客气: polite, courteous, formal, modest...
手势: gesture, sign, signal...
上网: to go online, to connect to the Internet, (of a document etc) to be uploaded to the Internet, (tennis, volleyball etc) to move in close to the net...
规格: standard, norm, specification...
请帖: invitation card, written invitation...
强壮: strong, sturdy, robust...
楼上: upstairs, (Internet slang) previous poster in a forum thread...
任意: any, arbitrary, at will, at random...
别提了: say no more, don't bring it up, drop the subject...
腿: leg...