a strict vegetarian的用法和样例：
- Sandra is a strict vegetarian and won't eat meat in any shape or form.
- B. His wife is a strict vegetarian.
- He was a strict vegetarian and had never eaten at any hotel or restaurant.
- The centre used to recommend a strict vegetarian diet but now uses a more flexible approach.
- The sister then understood that it was a lesson she had to learn. Now she is doing fine, keeping a strict vegetarian diet and practicing diligently.