crack的第三人称单数（三单）为：cracks...

jacklight的音标：jacklight的英式发音音标为：['dʒæklaɪt]jacklight的美式发音音标为：['dʒækˌlaɪt]...

n.（为吸引买主等而对某物进行的）包装( package的名词复数 )，包装袋，打包...

I tried to beat that blackjack game at the Horseshoe Club in Brooklyn.我想赢布鲁克林那个马蹄俱乐部的21点.I'll shoot some craps or play some blackjack.我要掷几把骰子，玩几把21点纸牌。Such as roulette , blackjack , craps, baccarat, keno, slot machi...

rack的现在完成时为：racked...

backfilling的音标：backfilling的英式发音音标为：['bækfɪlɪŋ]backfilling的美式发音音标为：['bækfɪlɪŋ]...

The wood had been recently polished to bring back the shine.木头最近经过抛光又恢复了光泽。It's now unlikely that future parliaments will bring back the death penalty.现在看来，将来议会不太可能恢复死刑。She went to Paris to bring back her errant son...

shackle的第三人称单数（三单）为：shackles...

vi.协防，补防，支持，堵塞，复制，往后退...

He'd left me to pack up the mail and post it off.他让我整理并投递邮件。Let's pack up and get ready to start at once.让我们收拾好行李,准备马上出发.It's time to pack up.到收工的时候了....

quacked的音标：...

...

自动位置对准，自跟踪...

black的现在进行时为：blacking...

Kim even hacked off her long hair.金甚至剪掉了她的长发。Matthew desperately hacked through the leather.马修拼命地将皮革砍穿。Some were hacked to death with machetes.有些人被大砍刀砍死。...

The hijackers were armed with hand grenades.劫机者身上带着手榴弹。I'm in direct contact with the hijackers.我与劫机者保持着直接的联系。The hijackers seemed anxious not to harm anyone.劫持犯似乎焦虑不安，不想伤害任何人。I’m in direct contact with the hijacker...

sackfuls的音标：...

放回原处，拨回，向后推...

vt.重击，使劲打，分配，击败，削减n.重击，一份儿，尝试，状况...

The products should be packed with wooden pallets or carton, stored in flatness andand unloaded carefully.产品用木托盘包装、纸盒包装, 无论是人工或机械卸车,必须轻拿轻放严禁抛掷,防止碰坏边角....

adj.流氓的，粗鄙的...

A storm-tossed ship was painted on the backdrop for the first act of the modern drama named Pirate.名为《海盗》的话剧第1幕的背景幕布上画的是颠簸于惊涛骇浪中的一条船。Leeds Castle will provide a dramatic backdrop to a fireworks display next Saturday...利兹...

blackhead的音标：blackhead的英式发音音标为：['blækhed]blackhead的美式发音音标为：['blækˌhɛd]...

tack的现在进行时为：tacking...

v.拼命...

blackjack的现在进行时为：blackjacking...

rack的现在进行时为：racking...

backward的近义词有：back, backward, hind, behind。下面这些词均有"在后，向后"的含义：back：作为副词或形容词时，强调所修饰物的位置以及动作运动方向。backward：可用于人或物，指向后的，落后的或迟钝的。hind：指成对并且分前后的东西的"后面的"。behind：指一物同它物相对的位置或场所。...

racks的音标：...

black的现在完成时为：blacked...