SORU: konuşmanın boş bırakılan bölümünde söylenmiş olabilecek sözü bulunuz
Researcher: We were using an instrument that measures the optical clarity of water. Interviewer: ----. Researcher: It's very simple, really, it shines a light from point A to point B. And if there is less light at the end, it's because there are particles in the water.