Old quantum theory
[化] 前期量子论
🧩 词语组成解析
old
[old]
adj. 老的;古老的;以前的;（用于指称被替代的东西）原来的;
n. 古时;
🗣️ 情景例句
Just rest now.
现在好好休息。
A light purse makes a heavy heart.
曩中无钱心事重。
At night, the children always do their homework.Then they go to bed.
晚上，孩子们总是做作业，然后去睡觉。