Lucitone
甲基丙烯酸甲酯树脂
🗣️ 情景例句
Is everything OK?
一切都好吗？
No. Behave yourself, Jack.
别胡闹，杰克。
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。