n.内酶...

Waterspouts and hailstorms occur infrequently , while snow and tornadoes are rare.水龙卷和冰雹偶有出现, 降雪和陆龙卷则属罕见.Tornadoes can pick up objects, animals and even people sometimes.龙卷风会卷走物品 、 动物,甚至于人类.And there is concern it could ...

碘乙醇...

doesnot的音标：doesnot的英式发音音标为：['dəʊznɒt]doesnot的美式发音音标为：['doʊznɒt]...