背部通气...

backlights的音标：...

lose track of的音标：lose track of的英式发音音标为：[lu:z træk ɔv]lose track of的美式发音音标为：[luz træk ʌv]...

把…放回原处，向后移，把钟/表拨慢，拨回...

n.中间动轴...

n.精装书( hardback的名词复数 )...

n.跑道，赛马场，赛车场...

v.回[逆]交，回交杂种( backcross的现在分词 )...

背齿轮，后齿轮，慢盘齿轮...

int.悲哉！哀哉！...

n.（尤指戏剧中用的）背景幕布...

Four of the cast jacked it in about Christmas.圣诞节前后剧组中有4个人退出了。The bridge was high, jacked up on wooden piers.桥很高，被几个大木墩托起。They jacked up the car.他们用千斤顶托起了汽车。...

红袋子，红包...

fishback的音标：fishback的英式发音音标为：['fɪʃbæk]fishback的美式发音音标为：['fɪʃbæk]...

racketeering的音标：...

n.杂砂岩，硬砂岩...

逆向的，反转的...

hackberries的音标：...

n.前下角索...

救生衣...

n.（网球等）球拍，〈美俚〉勒索金钱，讹诈，敲诈，骗局，（四周有围墙的）拍打回力网球，硬壁回力球，喧骚，吵闹，嚷闹，扰嚷，喧骚嘈杂的集会，狂欢v.嚷闹，吵闹，纵情欢闹，用球拍打...

sack的第三人称单数（三单）为：sacks...

setback的音标：setback的英式发音音标为：['setbæk]setback的美式发音音标为：['sɛtˌbæk]...

backbreaking的音标：backbreaking的英式发音音标为：['bækˌbreɪkɪŋ]backbreaking的美式发音音标为：['bækˌbrekɪŋ]...

The finance minister backtracked on his decision.财政部长收回了他的决定。He backtracked into the wood and climbed a tall tree.他沿原路返回树林,爬上一棵粗壮的大树....

n.（屋后有草皮的）后院( backyard的名词复数 )，后花园，被看作自家后院一般的地方，邻近地区...

heart attack的复数形式为：heart attacks...

n.小提琴状的东西...

CHAPTER VI THE PACKAGING AND REPACKAGING OF DRUGS.第六章药品的包装和分装.Repackaging subprime mortgages does not further that cause, but other arm's - length markets do.把次级抵押贷款重新包装并不能让经济进一步发展, 而其它公平市场却能做到.If you have bad mortg...

backcountry的音标：backcountry的英式发音音标为：['bækkʌntri]backcountry的美式发音音标为：['bækˌkʌntri]...