Understratum
n. 底层
🗣️ 情景例句
You can't fight it.
你再争也没有用。
Doubt is the key of knowledge.
怀疑乃知识的钥匙。
Large groups of Native Americans were forced to move away form their old hunting grounds.
成批成批的美洲土著人被迫从他们原来的狩猎场迁走。