Foamsil
泡沫石英玻璃
🗣️ 情景例句
Before we go to the gallery,
在我们去画廊之前
Have you taken a train?
你坐过火车吗？
and at the most critical juncture we took turns in watching that point.
在最紧急的时刻，我们轮流监视那段河流的险情。