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
Just sketching.
只是画些草图。
The following answer is subject to official confirmation.
以下的答案必须再经过正式确认才有效。
They had a definite meaning, for they were as near as early man could get to writing.
它们有着一定的含义，因为它们已接近古代人的文字形式。