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
but when I received the letter
但是当我收到那封信
I am a native.
我是本地人。
I told her that either I would have to buy a new mower or let the grass grow.
我告诉她，要么买一台新割草机，要么让草长下去。