Pdf file
PDF文件
🧩 词语组成解析
abbr. 概率分部函数（Probability Distribution Function）
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
Did you see what Diane was eating? And she's on a diet.
你看戴安妮在吃什么吗？她在节食啊。
To come out of hibernation
从冬眠中醒来
This is supposed to induce pleasurable sensations in the elephant,
据说这是为了使象产生愉快的感觉，