重点讲解：
1. culture shock
文化冲击，文化休克（指初到异国时的焦虑、孤独和困惑感）；
eg. Callum, recently arrived in Glasgow, is jobless, homeless, friendless, and suffering from culture shock.
卡勒姆初到格拉斯哥，没有工作，无家可归，无人倾诉，在文化冲击中挣扎。
eg. Most people feel culture shock when traveling to a foreign culture.
去海外旅行时，许多人会感觉到不同文化的冲击。
2. open up
畅谈；无拘无束地谈；自由自在地谈；
eg. Lorna found that people were willing to open up to her.
洛娜发现人们愿意对她畅所欲言。
eg. After a few drinks he began to open up a bit.
他喝了几杯酒话就多起来了。
3. on time
准时；按时；
eg. Don't worry, she'll be on time.
别急，她会准时到的。
eg. Their planes usually arrive on time.
他们的飞机通常都会准时抵达。
