Refocusing
[医]回聚[磁共振术语]
🗣️ 情景例句
I work on the school magazine.
我在校杂志社工作。
I'm reading a book.
我正在读一本书。
This would solve the problem of ventilation, for if a train entered this tunnel, it would draw in fresh air behind it.
因为如果有列火车开进隧道，它就把新鲜空气随之抽进了隧道。