Planck's quantum hypothesis
[医] 普朗克氏量子假说
🧩 词语组成解析
🗣️ 情景例句
Thank you so much.
非常感谢你。
Every day is not Sunday.
好景不常在，好花不常开。
It is much cheaper to post or email a long report than to fax it.
邮寄或电子邮递一封长篇报告比传真要便宜得多。