I wish I could. But I'm afraid I'll be out on business by then. Can I take a rain check?

但愿我能去。可是我担心那时我会出差。你能改天再请我吗？

youdao

I wish I could. But I'm afraid I'll be out on business by then. Can I take a rain check?

但愿我能去。可是我担心那时我会出差。你能改天再请我吗？

youdao