on board到船上，在船上，上火车或飞机
boast of (or about)吹嘘
out of breath喘不过气来
in brief(=in as few words as possible)简言之
in bulk成批地，不散装的
take the floor起立发言
on business出差办事。
be busy with sth.于某事。be busy doing sth.忙于做某事
last but one倒数第二。
but for (=without)要不是。表示假设
[b]
发表于 2016-8-9 16:26:40