Echo technique
[电] 回双工技术
🧩 词语组成解析
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
Sir, I thought this was an emergency.
先生，我想这是一位急病患者。
He plays with my friends every day.
他每天都和我的朋友玩。
The fact that the policeman was prejudiced against foreigners could not be recorded in the official files.
警察歧视外国人的事在官方档案中不可能加以记载，