假装: to feign, to pretend...
摔: to throw down, to fall, to drop and break...
以至: down to, up to, to such an extent as to..., also written...
便: convenient; handy...
原理: principle, theory...
民歌: folk song...
键: key (on a piano or computer keyboard), button (on a mouse or other device), chemical bond, linchpin...
成千上万: by the thousands and tens of thousands (idiom); untold numbers, innumerable, thousands upon thousands...
方言: topolect, dialect...
修车: to repair a bike (car etc)...