Alex and Lorenza's cryptic crossword

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Across
  1. 3. Place a car on a cow
  2. 4. Boy lost in red barn
  3. 7. Currently mostly behind on an article about student love for a show
  4. 9. Hard year in power unit for scientist
  5. 11. An animal is regularly ignorant
  6. 12. Most delight after counter weapons embraced
  7. 14. 500 of the French come after copper pennies to hold
  8. 17. Traitors see garden destroyed
  9. 18. Our sand is strangely reptile
Down
  1. 1. King annoys food man
  2. 2. Law hidden in femur physics
  3. 3. Animal seen in robot terminal
  4. 5. This Latin pitch for sport
  5. 6. Confused panic at leader
  6. 8. Mathematician joins in circumference disgust
  7. 10. Back the French man
  8. 13. Myths bearing variable acceleration for a girl
  9. 14. A mammal is a bird without a castle
  10. 15. Constant gratitude at first animal
  11. 16. Place drugs around a band for food
  12. 18. Avoid animal