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
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