First triad
[化] 铁三素组(指铁钴镍); 铁类金属; 铁基金属; 黑色金属
🧩 词语组成解析
first
[fɝst]
n. 第一，最初;头等;一号，;[乐]高音部;
adv. 最早，最初;首次;宁愿;优先;
adj. 第一流的;最初的，最早的;基本的，概要的;高音的;
num. 第一;
triad
['traiæd]
n. 三个一组;三幅一组;三和音;
🗣️ 情景例句
You may use a first name if you are asked to (call me …).
如果你得到允许的话，你便可以直呼某人的名字。
To work hard in the office
在公司努力工作
since her parents had impressed upon her that it would be unforgivable to miss it and cause the friends with whom she was going to stay to make two journeys to meet her.
因为她的父母再三跟她说，如果误了这趟车，她的东道主朋友就得接她两趟，这是不应该的。