1. Unless 2. living/that live/which live 3. polluted/dirty
4. with 5. once 6. it 7. the 8. be made
9. hard/difficult 10. that / which
略
1. Unless 2. living/that live/which live 3. polluted/dirty
4. with 5. once 6. it 7. the 8. be made
9. hard/difficult 10. that / which
略