Three-tier
[医]三层
🧩 词语组成解析
three
[θri]
num. 三;三个;第三（章，页等）;
n. 三岁;三个人[东西];三，三个;
adj. 三的;三个的;
tier
[tiə]
n. 等级;阶梯座位等的一排，一行，一层;包扎工;
vt. 层层排列，使层叠;
vi. 成递升排列，层叠;
🗣️ 情景例句
Great job!
干得好，干得妙！
Moving away
正在移开
As the floods had put the telephone out of order, we could not find out how they were managing.
由于洪水造成了电话中断，我们无法了解他们情况。