v.(使某物[人])坚韧,坚强,强硬( toughen的过去式和过去分词 );
例句:
They have toughened things up recently at the school.
最近他们在学校里把事情弄得很僵了.
She has toughened up a lot since last year.
自去年以来她已经变得坚强多了.
This set is of toughened glass, and not easy to break.
这是钢化玻璃的, 不易碎. 您看这图案怎么样?