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　　It's been one of those days!

　　这一天真倒霉！

　　The price is obviously one of the main selling points.

　　显然，价格低是一大卖点。

　　Could you spare one of your staff to help us out?

　　你能不能从你手下抽一个人过来帮帮我们？

　　In a way it was one of our biggest mistakes.

　　从某种意义上来说，这是我们所犯的最大错误之一。

　　A good training programme is one of the conditions for successful industry.

　　良好的培训计划是企业成功的先决条件。