Toughening
v. （使某物[人]）坚韧, 坚强, 强硬( toughen的现在分词 )
🗣️ 情景例句
I'll be OK.
没什么。
The frog is frightened at the sight of a snake.
那只青蛙因为看到了蛇而战抖。
How can I climb up that wall! I wish I were a bird!
我怎么能够爬得上那堵墙？我要是一只鸟就好了！