Back diffusion
[电] 逆扩散
🧩 词语组成解析
back
[bæk]
n. 背，背部;背面，反面;后面，后部;（椅子等的）靠背;
vt. 使后退;支持;加背书于;下赌注于;
vi. 后退;倒退;
adj. 背部的;后面的;以前的;拖欠的;
adv. 以前;向后地;
🗣️ 情景例句
It's a pleasure to meet you too, Mrs. Green. I've heard so much about you.
格林太太，我也很高兴见到您。早就听说过您。
What time is the mail delivered on Saturday?
邮件在星期六什么时间被递送？
Even he still lives under the illusion that country life is somehow superior to town life.
即使他也仍存有幻觉，好像乡村生活就是比城市生活优越。