6 sentences

1. 很难说哪种设计更好。

   hěn nán​shuō nǎ zhǒng shè​jì gèng​hǎo.

   It is difficult to say which design is better.

   Source: CCMatrix

2. 很难说成功率如何。

   hěn nán​shuō chéng​gōng​lǜ rú​hé.

   It’s hard to say what the success rate is.

   Source: CCMatrix

3. 很难说哪种生活方式更好。

   hěn nán​shuō nǎ zhǒng shēng​huó​fāng​shì gèng​hǎo.

   It’s hard to say which way of life is better.

   Source: CCMatrix

4. 现在还很难说。

   xiàn​zài hái hěn nán​shuō.

   It's hard to say right now.

   Source: OpenSubtitles

5. 很难说明天的天气将会怎样。

   hěn nán​shuō míng​tiān de tiān​qì jiāng​huì zěn​yàng.

   It's hard to say what the weather will be like tomorrow.

   Source: Tatoeba

6. 很难说绿茶是否比咖啡更适合你。

   hěn nán​shuō lǜ​chá shì​fǒu bǐ kā​fēi gèng shì​hé nǐ.

   It is difficult to say if green tea is better for you than coffee.

   Source: CCMatrix