We used a roller to paint the classroom walls.
我們用滾筒來油漆教室的牆面。
Dad cleaned the roller after painting the door.
爸在漆完門後把滾筒清乾淨。
Our art club shares one roller and several brushes.
我們的美術社共享一個滾筒和幾支刷子。
Please wash the roller with water after use.
用完後請用清水把滾筒洗乾淨。