toughen

过去分词：

动词过去分词: toughened

更多词形：

名词: toughener | 动词过去式: toughened | 动词过去分词: toughened | 动词现在分词: toughening | 动词第三人称单数: toughens |

单词例句：

One theory is that they were trying to toughen up the next generation.

有一种理论认为他们在试图磨练下一代。

The rubber crumb modified by heavy oil and styrene copolymer was used to toughen waste PP.

用“重油”与苯乙烯共聚改性胶粉增韧废PP。

Earlier, the UN Security Council voted unanimously to toughen sanctions against North Korea.

此前，联合国安理会一致同意对朝鲜实施严格制裁。

All this mountain climbing will toughen the boys up.

这些爬山运动会把孩子们锻炼得身强体壮。

A voiceover announcer asks viewers, "Worried your child will never toughen up?

这时，画外音想起：“还在担心你的孩子不会坚强？

Taking care of pooch was his attempt to toughen me up and teach me responsibility.

他盘算着通过照看普茨使我坚强起来，并教我养成责任感。

To subject(glass or metal)to a process of heating and slow cooling in order to toughen and reduce brittleness.

使退火给（玻璃或金属）加热并使之慢慢冷却以使之变硬并减少易碎性

Nixon had reined me in; he had made me toughen our stand.

尼克松把我勒住了；他使我强化了我们的立

Basically he needs to toughen up a little bit.

主要是，他需要更强悍点。