Deltics
(deltic 的复数) abbr. delay line time compression 延迟线路时间压缩（装置）
🗣️ 情景例句
We'll be looking for your book.
我们会去买你的书。
Has everybody got a sheet?
每个人都拿到材料了吗？
It is only 380,000 kilometres away, and it has been visited by man already.
已经有人到过月球旅行了。