Dioxydisulfotungstate
二氧二硫钨酸盐
🗣️ 情景例句
When did you come here?
是什么时候来这儿的？
Nothing down, nothing up.
没有落就没有起。
Suddenly they came to a waterfall which dropped into an underground lake at the bottom of the cave.
突然，他们来到一道瀑布前，那瀑布奔泻而下，注入洞底一处地下湖里。