Tcsec
可信计算机系统评价准则
🗣️ 情景例句
You cannot believe how sorry I am.
你不知道我感到多么抱歉。
I can't say for certain off-hand.
我还不能马上说定。
Then I'll water them to stop the soil getting too dry.
然后，我还要给它们浇水，以免土壤变得太干燥。