Graface
石墨-二硫化钼固体润滑剂
🗣️ 情景例句
I have been a poor student of foreign languages.
外语就学得不好。
After dinner sit awhile, after supper walk a mile.
正餐以后，休息片刻；晚餐以后，步行一哩。
He has the eye of a painter.
他有画家的鉴赏力。