第一句：What's the time difference between Beijing and Vancouver?
北京和温哥华的时差是多少？

A: What's the time difference between Beijing and Vancouver?
北京和温哥华的时差是多少？
B: 16 hours. Vancouver is 16 hours behind.
16小时，温哥华晚16小时。
A: Are we losing or gaining a day on the way to Canada?
我们到加拿大是少一天还是多一天呢？
B: We are gaining a day.
多一天。
A: Does it mean that we are departing from Beijing and arriving in Vancouver on the same day?
那就是说，我们起飞和到达是在同一天？
B: That's correct.
对。
A: It's great. Then I can have two birthdays.
太棒了，那么我可以过两个生日。

第二句：Do you have any idea what time it is in New York now?
你知道纽约现在是几点吗？

A: Do you have any idea what time it is in New York now?
你知道纽约现在是几点吗？
B: It's about 7 o'clock in the evening.
大约晚上7点。

知识延伸：

What's the time difference between... and... ?
……和……的时差是多少？

上句是用来询问时差的一种表达方法。当地时间是local time，而自己出发时间则是our time。

另外，时差也称jet lag，但这里是指人们在乘飞机飞越不同时区后的疲劳感。

例如：I still have jet lag.
我还有时差的困扰。