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 91. buy sth. for…money 用多少钱买 92. be capable of 能够, 有能力 be capable of being +过去分词:是能够被…的 93. in any case(=for love or money, at any rate, at any price, at any cost, whatever happens; anyhow)无论如何 94. in case (=for fear that) 万一; 95. in case of (=in the event of)如果发生…万一 in the case of 至于…, 就…而言 96. in no case在任何情况下都不(放句首倒装句) 97. be cautious of 谨防 98. center one’s attention on(=focus one’s attention on) 把某人的注意力集中在…上 99. be certain of (=be sure of) 有把握, 一定. 100. for certain of (=for sure )肯定地,有把握地