Indocarbon
靛炭(一种硫化染料)
🗣️ 情景例句
I hear the exams will be very tough.
我听说考试挺难的。
Good luck!
祝你好运。
Hans returned to his family home, but the house had been bombed and no one in the neighbourhood knew what had become of the inhabitants.
汉斯重返故里，但他的家已被炸毁，左邻右舍谁也不知原住户的下落，