Answer-back device
[计] 应答装置
🧩 词语组成解析
answer
['ænsɚ]
vt.& vi. 答复; 解答; 答辩;适应;
n. 回答;答案;反应;足以媲美的人;
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
Welcome to China. May I have a look at your customs declaration?
欢迎来中国。我可以看一下您的入境申请报表吗？
I haven't heard from him for a long time.
我很久没有收到他的信了。
The house moved and a few pictures fell off the wall, but that was all.
房屋也在动，几幅画从墙上掉下来，但只是这些。