Ncaa
abbr. （美国）全国大学生体育协会（National Collegiate Athletic Association）
🗣️ 情景例句
Thank you.
谢谢。
I will be in between six and eight.
我6点至8点都在。
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。