Toughens
v. （使某物[人]）坚韧, 坚强, 强硬( toughen的第三人称单数 )
🗣️ 情景例句
It's a piece of cake.
这是小菜一碟。
Money begets (or breeds or gets) money.
钱产生钱。
I started to sing. The baby watched and listened ,and she didn't cry any more.
我开始唱歌。小孩看着，听着，不再哭了。