本人学习笔记

1. 时差背后的故事

1.1 地球自转产生了时差

Some countries, such as the US, have several time zones.
One large country, China, has just one time zone for the whole country.
中国标准时，美国本土4个标准时，英国标准
时光节约时，Every year some countries move their clocks forward in the spring and move them back in the autumn.

When it's daytime in the US, it's nighttime in China.
When it's 10 am in New York, it's 7 am in San Francisco.
There is a time difference between A and B.
- There's a 12-hour time difference between Boston and Shanghai in Summer.
- Shanghai is 12 hours ahead of Boston in Summer.
- Boston is 12 hours behind Shanghai in Summer.

How to deal with time zones in a long-distance relationship

Be patient.
- Don't go crazy when there's no quick reply to messages.
- Impatience can harm your relationship.
Take advantage of the World Clock on your smartphone
- With the help of the World Clock, you don't have to remember time zones.
Schedule calls in advance
- Calling your partner whenever you want to might cause a lot of trouble.

两种常见的越洋会议模式
- Telephone conference & Video conference
How to arrange a conference that crosses time zones
- We can use a shared calendar to find an open slot on everyone's schedule.
- Send emails to confirm with all attendees.
- Send reminders to all attendees before the meeting.

What is the cause of jet lag
- Traveling across several time zones causes jet lag.
- The clock may say it is 8:00 pm in Los Angeles, but for your body it's still noon.
Suffer from jet lag.
- I'm still suffering from jet lag after traveling to Boston.
Signs of jet lag
- Difficult to sleep after a long flight
- Have a headache.
- Feel tired
How to beat jet lag
- Get a good night's sleep before you fly.
- Drink a lot of water and avoid coffee or wine.
- Alcohol and caffeine can disrupt your sleep patterns.
- Take a small dose of melatonin(褪黑激素, 催眠).