Phenazinyl
[化] 吩嗪基
🗣️ 情景例句
you have a lunch appointment with Mr. Levine,
跟Levine先生约好吃午餐。
Rear sons for help in old age; and store up grains against famine.
养儿防老。
OK. Let me help you. There!
好，让我来帮你。