不好意思，这份空运发票是我同事做的，现在我把单价改掉，重新发送给你。

I am sorry that this air freight invoice was made
by my colleague. Now I will change the unit price and resent it to you.

I am sorry that the invoice for the airway bill was made by my colleague. I've correct the unit price and re-sent you.

。。。。。。好难的

I regret to tell you that airway invoice was made by my colleague, I have revised the price and resend it to you this time.

I am sorry the air invoice made by my colleague is wrong. I will correct the unit price and send to you later.