1.The researchers added that children up to the age of 17 or 18 remain adept at learning grammar.
adept at 熟练于
They also need to be adept at collaborating with colleagues outside of IT.
他们还需要擅长与信息技术部门之外的同事合作 。
2.It's not really something that you can make up later.
make up 弥补
They'll do all they can to make up the economic losses.
他们要尽一切力量弥补这些经济损失 。