7 sentences

1. 母亲的努力没有白费。

   mǔ​qīn de nǔ​lì méi​yǒu bái​fèi.

   The mother's efforts were not in vain.

   Source: CCMatrix

2. 我不能让我的努力白费。

   wǒ bù​néng ràng wǒ​de nǔ lì bái​fèi.

   I can’t let my efforts go to waste.

   Source: CCMatrix

3. 我们所有的努力都白费了。

   wǒ​men suǒ​yǒu de nǔ​lì dōu bái​fèi le.

   All our efforts were in vain.

   Source: Tatoeba

4. 今天的任何努力都不会白费。

   jīn​tiān de rèn​hé nǔ lì dōu bù​huì bái​fèi.

   None of today’s efforts will be in vain.

   Source: CCMatrix

5. 他们的努力和坚持没有白费。

   tā​men de nǔ​lì hé jiān​chí méi​yǒu bái​fèi.

   Their efforts and persistence were not in vain.

   Source: CCMatrix

6. 你因为我白费了一年的时间。

   nǐ yīn​wèi wǒ bái​fèi le yī nián de shí​jiān.

   You wasted a year because of me.

   Source: OpenSubtitles

7. 我们花在教导他们与爱他们的时间，永远都不会白费。

   wǒ​men huā zài jiào​dǎo tā​men yǔ ài tā​men de shí​jiān, yǒng​yuǎn dōu bù​huì bái​fèi.

   The time we spend teaching and loving them is never wasted.

   Source: CCMatrix