1. 我只是随便看看。

I'm just looking around.

2. 请随意。

Feel free to look around.

3. 能帮我拿这件衣服下来吗？我想试试（试穿）。

Could you help me get this item? I'd like to try it on.

4. 这件不合适。我还是再看看吧。

This doesn't seem to fit well. I think I'll keep looking.

5. 有红色、黄色、蓝色、黑色、白色、青色的款式吗？

Do you have sizes available in red, yellow, blue, black, white, and green?

6. 这件衣服多少钱？

How much is this item?

7.就不能便宜点吗？

Couldn't you reduce the price a bit?

8. 不讲价。

We don't negotiate on price.

9. 这句话其实不用这么生硬，别人要降价，你只要说：

You don't actually need to be so firm. If someone asks for a discount, you can simply say:

10. 谢谢惠顾/谢谢光临。

Thank you for your visit/Thank you for shopping with us.

Note: The last sentence seems to be incomplete and might need clarification or completion to fit the context of a clothing store interaction.