Dithionic
a. 连二硫酸的
🗣️ 情景例句
that will bring parents and teachers together once a week
让家长们及教师每星期一次
He always keeps his words.
他总是信守诺言。
The only regular visitors to the monastery in winter are parties of skiers who go there at Christmas and Easter.
冬天常来修道院参观的只有一批批滑雪者。他们在圣诞节或复活节到那儿去。