Paleozoic
a. 古生代的\\nn. 古生代
✅ 同义词
🗣️ 情景例句
I think aerobics is easy.
我觉得有氧运动很容易。
The offer is made without engagement. All orders will be subject to our written acceptance.
此报盘没有约束力，所有定单以我方书面接受为准。
The journey is so smooth that there is nothing to prevent you from reading or sleeping.
旅途平稳，丝毫不妨碍你阅读或睡眠。