Rain white noise Secrets
industries such as coalmining, ship-building and so forth which involve the use of significant or heavy machines or which develop large or heavy items. swaar industrie صِناعَة ثَقيلَه тежка промишленост indústria pesada těžký průmysl die Schwerindustrie sværindustri βαριά βιομηχανία industria pesa