Nitronium
硝离子
🗣️ 情景例句
An economic recession now seems more than likely.
现在看来，经济衰退的可能性相当大。
Try (your friend) before you trust him.
朋友要经考验，才能取得信任。
After her husband had gone to work.
理查兹夫人等丈夫上班走后，