a shot of morphine的用法和样例：
- Gianelloni decided to give him a shot of morphine, not because he needed it but because “I didn't want that son of a gun to get all worked up.
- I took a shot of the twin sisters.
- I should have asked him for a shot of penicillin.
- The result, in lay terms, is a shot of espresso.
- Give me a shot of bourbon whisky.