Viferral
吡啶与三氯甲醛聚合物
🗣️ 情景例句
You got that part right.
你们这一部份猜对了。
How much does shw want?
她要多少？
He gets into the lift. It takes him down to the first floor.
他进入电梯。他乘电梯下到1楼。