pollutants / hide unblock visible sound
darkness_visible is not oxymoron. protective_filtration_mask is not protective_mask. find_outside is not noise_pollution. find_underwater is not pollutants. darkness_visible is oxymoron. reflectivity is not visible_feature. unblocking_traffic is performing. find_outside is noise_pollution. unblocking_traffic is not performing. protective_filtration_mask is protective_mask.