Feather alum
[化] 铁明矾; 毛矾石
🧩 词语组成解析
feather
['fɛðɚ]
n. 羽毛，翎毛;状态，心情;种类;桨叶的水平运动;
v. 给装上羽毛，用羽毛装饰;使（桨）与水面平行;长羽毛;
n. 明矾, 矾, 校友\\n[化] 明矾; 钾铝明矾
🗣️ 情景例句
Mr. Carlson is busy at the moment. May I help you?
Carlson先生现在正忙着呢。我可以为你效劳吗？
Excuse me for a moment.
失陪一会儿。
riding on its air cushion over a single rail, which it never touches,at speeds up to 300 m.p.h.----the possibilities appear unlimited.
靠气垫在单轨上行驶而不接触轨道，时速可达每小时300英里。气垫船的前途是不可限量的。