a watery grave的用法和样例：
- At the age of 29, the poet met with a watery grave.
- At the age of 29,the poet met with a watery grave.
- All passengers on board sank down to a watery grave.
- She was rescued from a watery grave(= saved from drowning).
- Every summer a number of boys terminate their youthful career in a watery grave.