我们是长期求购的。但我不确定您的质量。所以我们需要样品的翻译：We are long term buy. But I'm not sure your quality. So we need samples 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

We are long-term Buy. But I'm not sure of your quality. So we need to sample

We are long term buy. But I'm not sure your quality. So we need samples

We are long seek buy.But I am indefinite you the quality.Therefore we need the sample

We have a long-term purchase. But I'm not sure your quality. We need to sample

We are long term buy. But I'm not sure your quality. So we need samples