age of deposit的用法和样例：
- The average age of the boys in this class is fifteen.
- I don't think he looks his age of seventy.
- The age of majority is eighteen.
- K-Ar isotopic ages of sulfide from ore suggest that the model age of deposit formation is 339.1 Ma,near to the Carboniferous stratum age,implying the start of sedimentary exhalative mineralization.
- He ran away from home at the age of thirteen.
- At the age of thirty, Mary began to lose colour.