zhèxiē / yǒuhài / fèiwù / bùnéng / zhíjiē / tiánmái / bìxū / jīngguò / tèshū / chǔlǐ这些有害废物不能直接填埋,必须经过特殊处理。These hazardous wastes cannot be directly landfilled; they must undergo special treatment.