- The behavious of aged softeniag for Ag 99.99% (A_1) and Ag 99.9% (A_2) were studied. The factors that have influence on the rate of age softening for silver materials, such as purity, compression ratio, temperature, and aging time, were discussed.
- He prefers to assort with people of his own age.
- Even the best quality rubber will perish with age.
- He come to the fore as a physicist at an early age.
- The average age of the boys in this class is fifteen.
- Education should not be restricted to any one specific age group.