Pervanadate
过钒酸盐
🗣️ 情景例句
Ah! I'll read it to you.
啊！ 我来读给你听听。
None preaches better than the ant, and she says nothing.
蚂蚁不说话，但最善于说教。
A short while ago, my sister helped me to carry one of my old bookcases up the stairs.
几分钟前，我妹妹帮我把一个旧书橱抬上了楼。