File security
[计] 文件保密
🧩 词语组成解析
file
[faɪl]
vt. 提出（离婚诉讼或其他讼案）;把…归档;用锉锉;发稿，寄给报社;
vi. 发送（报道给报社）;排成一行行走;提出申请;
n. 文件（夹）;档案;纵列;锉刀;
fil线+e → 用线穿成的→ 档案
🗣️ 情景例句
I'm doing it for you.
也是为你做的。
Dear, you'll be home right after work, won't you?
亲爱的，你做完工作会直接回家是吗？
Since that time, racing drivers have reached speeds over 600 miles an hour.
从那时以来，赛车选手已达到每小时600英里的速度。