管用: efficacious, useful...
出资: to fund, to put money into sth, to invest...
衰老: to age, to deteriorate with age, old and weak...
无精打采: dispirited and downcast (idiom); listless, in low spirits, washed out...
严谨: rigorous, strict, careful, cautious, compact, well-knit...
送别: to farewell...
退休: to retire, retirement (from work)...
宁静: tranquil, tranquility, serenity...
