Quadriplex
a. 四倍的, 四重的\\nn. 四式, 四显性组合
🗣️ 情景例句
Be careful, I think the neighbors have been spying on us.
小心点，我觉得我们邻居一直在窥视我们。
I'm not really sure.
我不太清楚。
as the wave leaves the particles behind back to its starting point again.
当波浪把微粒留在身后时又回到出发点。