Across
- 1. down-to hand down from one generation to the next（8 letters）
- 4. a chemical substance that tastes sour and reacts with metals（4 letters）
- 5. a reflective surface that shows images（6 letters）
- 6. things that transports people or goods（7 letters）
- 8. search for or chase wild animals（4 letters）
- 10. a machine that converts energy into mechanical motion（6 letters）
- 11. things, matter, or material（5 letters）
Down
- 2. a set of rooms forming a separate residence within a building（10 letters）
- 3. to gain money or a reward through work or effort（4 letters）
- 7. a series of connected metal links（5 letters）
- 9. relating to a period of one year（6 letters）