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