Ammoniogen
生氨剂
🗣️ 情景例句
Is it all right if I use a letter of credit?
如果我使用信用证，没关系吧？
When an opportunity is neglected, it never comes back to you.
机不可失，时不再来。
The sun was shining and the sky was crystal clear.
阳光闪烁，天空湛蓝。