Pentafluorination
五氟化反应
🗣️ 情景例句
to open the building for us on the next four weekends.
在往后四个周末开放那座建筑。
I wonder if you are on my side.
我不知道你是否站在我这边。
They support the cables from which the bridge has been suspended.
高塔支撑着钢缆，而钢缆又悬吊着大桥，