Heptalenium
并庚间三烯离子
🗣️ 情景例句
China is implementing a family planning policy.
中了在实施计划生育政策。
What is the total circulation of this newspaper.
这家报纸总发行量多少？
John works very hard. He goes to work early.
约翰工作很努力。他早早上班。