Infrastructural
a. 基础结构的基础设施的
🗣️ 情景例句
Typing is easy once you get the hang of it.
一旦你掌握诀窍，打字就很简单。
I have received a letter from my cousin.
我收到了我表兄的信。
You'd better not go inside. There might be snakes.
你最好不要进去。说不定有蛇呢。