Better at the tasks at hand? Happier?

　　更擅長(cháng)手頭的工作?更快樂(lè )?

　　Being better at those things meant a greater chance of survival ．

　　更擅長(cháng)做那些事情能增加生存的幾率。

　　Eyesight doesn't get any better at my time of life.

　　到我這把年紀，視力絕不會(huì )變好的。