Main communication system
[计] 主通信系统
🧩 词语组成解析
main
[meɪn]
adj. 主要的，最重要的;全力的;
n. 最主要的部分，重点;主要管道;体力;[航海]公海;
communication
[kə,mjunɪ'keʃən]
n. 通讯，通信;交流;书信;传达;
com共同+muni交流+cat=cate表动词 + ion表名词 → communicat(e)沟通 + ion表名词 → 通讯；传达；交通
🗣️ 情景例句
It's our family tree.
这是我们的家谱。
It's faster but more expensive to ship goods by air.
空运较快但运费较高。
Libraries made education possible, and education in its turn added to libraries: the growth of knowledge followed a kind of compound interest law, which was greatly enhanced by the invention of printing.
藏书使教育成为可能，而教育反过来又丰富了藏书，因为知识的增长遵循着一种“滚雪球”的规律。印刷术的发明又大大提高了知识增长的速度。