Pre-echo
n. 1.前回声 2.预兆, 预示
🧩 词语组成解析
abbr. 炼油工程师（Petroleum Refining Engineer）
echo
['ɛko]
n. 回声，共鸣;（言语、作风、思想等的）重复;重复者;[无线电]回波;
vt. 重复，效仿;随声附和;类似;发射（声音等）;
vi. 被重复;产生回响;充满回声;
echo-, ech- 表示”声音 ,噪音”;特备是”回声”;”重复,模仿”
🗣️ 情景例句
I give up, you win.
我放弃，你赢了。
Practice what you preach.
言必行。
Hay had been cut and cowsheds had been cleaned.
干草已切好，牛棚也打扫干净了。