n.干非法勾当者，骗子...

racketeer的复数形式为：racketeers...

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....

crack的复数形式为：cracks...

crackle的第三人称单数（三单）为：crackles...

My rucksack was too big for the luggage rack.我的背包太大了，行李架上放不下。Turn the cake the right way up on to a wire rack.把蛋糕翻到合适的方向对准金属丝架上。The old house soon went to rack and ruin.这所旧房子很快就毁坏了....

track的近义词有：hunt, explore, track, seek,pursue, follow, chase, hunt, trace, track, trail。下面这些动词均含"搜索，寻找"的含义：hunt：一般指寻找所需的物件，或对罪犯的搜寻，特指追猎。explore：一般指对未知事物或新生事物的探索、观察与研究。track：侧重按一定线索追查出结果。seek：语义庄重，语气强，使用广。多暗示做出很大努力去寻求某人或物。...

crackers的音标：crackers的英式发音音标为：['krækəz]crackers的美式发音音标为：['krækərz]...

crack的近义词有：break, burst, crack, crush, fracture, shatter, smash。下面这些动词均含"打破，弄碎"的含义：break：常用词，含义广泛，多指猛然用力将坚硬物打破或损坏。burst：指某物因内部外部压力过大而出现严重破裂、爆开或账破。crack：多指因长期使用或经受压力，物体表现呈现裂纹、裂口或破裂、裂开，但一般没成碎片。crush：指用力把东西压破或变形。fracture：比c...

backtrack的第三人称单数（三单）为：backtracks...

firecracker的音标：firecracker的英式发音音标为：['faɪəkrækə(r)]firecracker的美式发音音标为：['faɪərkrækə(r)]...

vi.走原路，由原路返回，改变主意，取消诺言vt.追踪，循迹调查...

adj.有裂缝的，声音沙哑的，精神失常的v.破裂，崩溃(crack的过去分词)，发沙哑声...

n.怪人，狂人adj.古怪的，离奇的，不切实际的...

Bush has racked up victories in another five states.布什在另外五个州又获得了胜利.A toothache racked my jaw.牙疼使我的下巴难受极了.The pain racked him.痛苦折磨着他....

He could hear the crackling of burning trees.他可以听见树木燃烧发出的噼啪声。Their crackling bad humour left them, but the heaviness of their spirit remained.他们的怒气平息了, 但心情仍很沉重.The firecrackers were crackling and spluttering.鞭炮劈里啪啦地响.The...

crackles的音标：...

crackdown的音标：crackdown的英式发音音标为：['krækdaʊn]crackdown的美式发音音标为：['krækˌdaʊn]...

crackled的音标：crackled的英式发音音标为：['krækld]crackled的美式发音音标为：['krækəld]...

adj.有盐味的，可厌的...

She was no more a crackpot than the rest of us.她和我们一样正常。That's not the way to do it, you crackpot.不是那样做的蠢材.He was prone to dismiss himself as " that well - known crackpot ".他常自嘲为 “ 那个著名的怪人 ”....

Suspicious fans exposed the racket and police arrested a man in Nottingham.起了疑心的爱好者揭发了这一勾当，警察在诺丁汉逮捕了一名男子。A furious player kicked his racket into the grandstand.一位愤怒的球员将他的球拍踢向了看台。The racket of drills and electric saws wen...

brackishness的音标：brackishness的英式发音音标为：[b'rækɪʃnəs]brackishness的美式发音音标为：[b'rækɪʃnəs]...

track的现在完成时为：tracked...

cracking的音标：cracking的英式发音音标为：['krækɪŋ]cracking的美式发音音标为：['krækɪŋ]...

n.碳氢化合物分裂器，氢化裂解器...

He announced that the army and police had been confined to barracks.他通告说军队和警察已经被禁闭在营房中不得外出。I got myself a pass into the barracks.我弄到了进兵营的通行证。The troops were ordered back to barracks .士兵们被命令返回营房。...

wrack的音标：wrack的英式发音音标为：[ræk]wrack的美式发音音标为：[ræk]...

n.行李架( rack的名词复数 )，支架，刑架，（羊、猪等带前肋的）颈脊v.使痛苦，使焦虑，绞尽脑汁( rack的第三人称单数 )...

backtrack的现在完成时为：backtracked...