1.involved in 加入
Britain's two main auction houses, Sotheby's and Christies, have been involved in valuing the works.
英国最大的两家拍卖行，苏富比和佳士得参与了对这些作品的估价。
2.as many as 多达
She gets as many as eight thousand letters a month.
她一个月里收到的信件多达8,000封。
3.appeal for 请求
His remarks amounted to an indirect appeal for economic aid
他的话相当于拐弯抹角地请求经济援助。
4.slow down 放慢
There is no cure for the disease, although drugs can slow down its rate of development
尽管药物可以减缓病情的发展，但是这种病仍然是不治之症。
5.gather to 聚拢
All the members of the family gather to enjoy a reunion dinner.
全家人聚在一起吃团圆饭。
