noun🔗Share車軸One of the two long pieces of wood, extending before a vehicle, between which a horse is hitched; a shaft."The farmer carefully attached the horse to the wagon's thills. "農夫は馬を注意深く馬車の車軸に取り付けました。vehiclemachinepartChat with AIVocabulary GamePractice Reading
noun🔗Share石炭層の下の薄い層The shallow stratum of underclay that lies under a seam of coal; the bottom of a coal-seam."The miners carefully scraped away the last of the coal seam, being cautious not to damage the soft thills underneath. "鉱夫たちは、下の柔らかい石炭層を傷つけないように注意しながら、石炭層の最後の部分を慎重に削り取った。geologymaterialsubstanceindustryChat with AIVocabulary GamePractice Reading
