Five years ago the pesticide industry finally discovered something that could pierce the armorlike shell of the Ampullarius canaliculatus: the expensive TTTA.
彷彿著了鐵布衫的福壽螺，直到五年前，農藥商才發現有一種藥效強、價格昂貴的「三苯醋錫」對它稍具殺傷力。