by the age of meaning in Chinese
到...年龄
Examples
- His ambition is to be at the wheel of a large corporation by the age of forty .
他的抱负是要在四十岁时控制一家大公司。 - A person may be thrown on the scrap heap by the age of fifty when many of the best years are still ahead .
人们在五十岁时候可以被掷进废品堆，而那时他最好的工作岁月还有很多。 - By the age of 10 he had played the piano
在10岁的时候他已经学会了弹钢琴。 - He had become an olympic champion by the age of twenty
他二十岁就已经是世界冠军了。 - By the age of seven he could write beautifully
他七岁时字就写得很漂亮了