late 14c., "encroachment" (a sense now obsolete), from Old French ataignement (Modern French atteignement), from ataindre; see attain. Meaning "action of attaining" is from 1540s; sense of "that which is attained, personal accomplishment" dates from 1670s.
权威例句
1. We congratulated her upon her attainment to so great an age.
我们祝贺她高寿.
2. Could it be said that it is impossible of attainment?
难道这是办不到的 吗 ?
3. We congratulated him upon his attainment to so great an age.