Infrastructures
n. 基础设施( infrastructure的复数形式 ); 基础结构; 行政机构; 秘密机构
🗣️ 情景例句
Where's your grandson Robbie and his friend Alexandra?
你的孙子Robbie和他的朋友Alexandra呢？
I have to become strong.
我必须庄敬自强。
the necessary method of study is to group the relevant material and to take note of all possible variant forms and conditions.
应采取的研究方法是，把有关各方面的材料汇集起来，同时注意任何可能出现的异常情况和条件。