重点讲解：
1. on record
有记录的；有记载的；
eg. This could have been one of the coldest golf tournaments on record.
这很可能是高尔夫锦标赛比赛史上天气最为寒冷的一次0hOkHxss|J。
eg. Last summer was the wettest on record for 50 years.
刚过去的这个夏季是50年来记录中雨水最多的zM1TJQQfliq。
2. no picnic
不是件轻松（或愉快）的事；
eg. Emigrating is no picnic.
移民不是件轻松的事=5&UB8hVtE(。
eg. It's no picnic having to look after six small children all day, you know!
你知道，整天得照看六个小孩可不是一件轻松的事q6x.*VP~3UwzASaw[。
3. thanks to
幸亏；归因于；
eg. Thanks to that job I became an avid reader.
多亏了那份工作我才成了一个喜欢阅读的人yt5@IT(RIT。
eg. Thanks to recent research, effective treatments are available.
多亏近来的研究才有了有效的疗法|s*7q+eQ3SvOwex。
4. come across
偶然发现；偶然遇见；
eg. I came across this book in an old bookstore in London.
我在伦敦一家旧书店里发现了这本书7RYl7)hpd0SIM8=^。
eg. I can't find my keys. If you come across them, please put them on the table.
我找不到我的钥匙，如果你在哪里看到的话，就将它们放在桌上7dX-lc9.We8m+8@1cV。
5. safe to say
有把握的；不会有错的；可以肯定的；
eg. I think it is safe to say that very few students expend the effort to do quality work in school.
我认为可以肯定地说学校里很少有学生肯为学好功课下功夫-~T,LNVJ2Yix。
eg. It is safe to say that the scientific method made possible the technological civilization of today.
完全可以这样说,，科学方法使今天的技术文明成为可能GJZVnQzq(dR3XyAgKS=H。