1. 用......做的:bemadeof... 用......做的 |be used for doing ... 被用来做...... | keep warm 保暖
2. be made of
2. 由......制成(制成以后还看得见原材料):50 .bemade from 由......制成(制成以后看不见原材料) | 51.bemadeof 由......制成(制成以后还看得见原材料) | 52.be not sure 表不确定
3.
3. 由......制成:be keen on 喜爱 |bemadeof 由......制成 |bemade upof 由......组成