重点讲解:
1. go on sale 出售;上市;
All tickets go on sale this Friday.
所有票在本星期五开始销售 。
2. close up 闭合;使合上;
Don't use cold water as it shocks the blood vessels into closing up.
不要用冷水,那样会刺激血管闭合 。
3. hold onto 保存;保留;
People hold onto letters for years and years.
人们会将信件保存很多很多年 。
4. in part 在某种程度上;部分地;
In part that's because industry is smack in the middle of the city.
部分原因在于:工业恰好在城市的中心 。