area region 区域
final last 最后的
diploma certificate 证书
pleasing satisfactory 令人满意的
wish hope 希望
massive extensive a mass of -- plentiful大量的
notion concept idea 概念
characteristic feature 特征
be characteristic of be typical of 是.所特有的
difficult hard tough 困难的
area field 领域
conference meeting会议
close intimate -- near亲密的
link connect 连接
explore investigate 调查
propose suggest advise -- recommend 建议
cater for meet satisfy 满足
provide supply furnish 提供
collaborate cooperate 合作
merge unite combine join 联合， 合并
come across run into meet 遇到