Infrastructrue
n. 深部构造；基底；下地壳层；下部结构设施
🗣️ 情景例句
I am on speaking terms with him.
我和他只是泛泛之交。
It only takes a few minutes.
只要几分钟而已。
Little by little the eleven minutes fell to zero.
慢慢地从11分钟减到了零。