Optical spectrum
[化] 光谱
🧩 词语组成解析
🗣️ 情景例句
However, through my experience in business at home and abroad.
但从事国内外的商业的经历中。
I was on the track team 10 years ago.
十年前，我在田径队。
Good morning. Sit down, please.
早上好，请坐。