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