Ferrography
鐵粉記錄術
??? 情景例句
What did I do with the rings?
我把戒指放哪兒了？
I would like you to keep is a secret.
我要你保守秘密。
He always meant to go back on day, but not to stay.
他總想將來回國看看，但卻不愿長期住下去，