81.on board 到船上，在船上，上火车或飞机
82.boast of (or about) 吹嘘
83.out of breath 喘不过气来
84.in brief (=in as few words as possible) 简言之
85.in bulk成批地，不散装的
86.take the floor 起立发言
87.on business 出差办事
88.be busy with sth. 于某事
be busy doing sth. 忙于做某事
89.last but one 倒数第二
90.but for (=without) 要不是。表示假设
