Orientite
锰柱石
🗣️ 情景例句
I have to turn off the lights,
我得关掉灯，
He's tired because he worked hard all day today.
他疲倦是因为他今天整天努力工作。
I've come to make sure that your stay in Beijing is a pleasant one.
我特地为你们安排使你们在北京的逗留愉快。