Paleozoic era
un. 古生代\\n
🧩 词语组成解析
a. 古生代的\\nn. 古生代
era
['iərə]
n. 纪元，年代;历史时期，时代;重大事件;
🗣️ 情景例句
What are you doing tomorrow night?
明天晚上做什么？
He seems very serious, but in fact he has a delightful sense of humor.
他看上去很严肃，其实很诙谐。
It's very thoughtful of you.
你想得真周到。