Xerogel
干凝胶
🗣️ 情景例句
You're sure Alexandra's going to be surprised?
你确定Alexandra会很惊讶吗？
I asked him to leave immediately, but he wouldn't.
我请他马上离开，但是他不肯。
If we go to visit the High Dam, we can take a boat to visit the temple at Abu Simbel.
如果我们去游览高坝，我们还可以乘船去观看阿布·辛拜勒神庙。