Tcsec
可信计算机系统评价准则
🗣️ 情景例句
Please do.
好呀。
Open your books and turn to page 20.
打开书，翻到第20页。
So I called on you and asked if I could borrow some jewellery. Do you remember now?
于是我去看望你，问你可不可以借给我一些首饰。现在想起来了吧。