Eupyrchroite
圆层磷灰石
🗣️ 情景例句
What year are you?
你是哪一级的？
They operated on him last night.
他们昨晚给他动手术了。
Ken gave up smoking two years ago. He'd been smoking for thirty years.
两年前肯戒了烟，之前他抽了三十年烟。