Security policies
[计] 安全性策略
🧩 词语组成解析
n. 政策；保险单（policy的复数）
🗣️ 情景例句
What other dialect do you understand?
你还懂哪种方言？
A good maxim is never out of season.
至理名言不会过时。
But here we come up against the most difficult of all obstacles to contact with people on other planets ----the astronomical distances which separate us.
然而，在和外星人联系中我们遇到的最大困难是分隔我们的天文距离。