🧩 词语组成解析
vt. 层层排列, 使层叠（tier的过去式与过去分词形式）
seat
[sit]
n. 席位，座位;所在地;场所;臀部;
vt. 使就座;使就职;使获得座位（或席位）;可容纳若干座位;
🗣️ 情景例句
Hi. This si Peter from Dr. Alice's office.
嗨，你好，我是埃里斯诊所的彼得。
The chemist discovered a new synthetic material.
化学家发现了新的复合物质。
Its wool, which had been dyed black, had been washed clean by the rain!
原来羊毛上染的黑色被雨水冲掉了！