Circumvallation
n. 围以城墙
✅ 同义词
🗣️ 情景例句
Yes. I like her.
是的，我喜欢她。
It is better to do well than to say well.
理论好不如实际好。
And anyone who gave more than a passing thought to the bottom confines of the oceans probably assumed that the sea bed was flat.
凡是稍稍想过大海海底的人大概都会认为海底是平坦的。