Fortifies
v. 筑防御工事于( fortify的第三人称单数 ); 筑堡于; 增强; 强化（食品）
🗣️ 情景例句
Don't cross that bridge till you come to it.
没到河边，先别操心怎么过桥。
It's ten minutes to four.
现在差十分四点。
and found our then prevailing primitive state completely uninteresting to their own advanced knowledge.
并且发现我们地球当时普遍存在着的原始状态同他们先进的知识相比是索然无味的。