Trichromate
三铬酸盐
🗣️ 情景例句
Do you speak a foreign language?
你会讲外语吗？
Whose pen is this?
这是谁的笔？
He opened the book and found a phrase.He read the phrase slowly.
他翻开书找到了一条短语。他缓慢地读着短语。