1. I can't talk right now, I'm on line with a customer.
现在我不能说话，我正在和一位顾客在线上交流。

2. The store is closed, but you can still order on line.
店铺关门了，但你仍然可以在线上下单。

3. I need to check my email, I'll be on line in a few minutes.
我需要查看我的电子邮件，我几分钟后会在线上。

4. The website crashed while I was on line shopping.
我在线购物时网站崩溃了。

5. Let's schedule a meeting on line, since we can't meet in person.
让我们在线安排一个会议，因为我们无法亲自见面。

6. I prefer to do my banking on line, it's more convenient for me.
我更喜欢在线上进行银行业务，这对我更方便。