kē / xué / jiā / zài / shí / yàn / shì / lǐ / lì / yòng / chāo / dī / wēn / yán / jiū / cái / liào / de / tè / xìng科学家在实验室里利用超低温研究材料的特性。Scientists use ultra-low temperatures in the laboratory to study the properties of materials.