jackboot的复数形式为：jackboots...

把…收藏起来，吃很多...

shackle的第三人称单数（三单）为：shackles...

backfill的现在进行时为：backfilling...

The ack - ack guns started immediately.高射炮立即开始发射.In our dearth of ack - ack guns all sorts of contrivances were used.在缺少高射炮的时候,我们利用了各种各样的巧妙方法.ACK ! Bug spray? Why do we need bug spray?啊? 杀虫剂? 我们要杀虫剂干什么?...

n.敲诈勒索，诈骗...

backpedal的现在完成时为：backpedaled...

blackguard的第三人称单数（三单）为：blackguards...

In many modern packs the jokers are printed in different colors or given different pictures.在现代扑克中,王牌的颜色和图样多种多样.The soldiers'great coats were strapped on their packs.战士们的厚大衣扎捆在背包上.Refill packs are cheaper and lighte...

v.跟踪( track的过去式和过去分词 )，跟踪摄影，留下（脏）足迹，追随（潮流等）...

pay back的音标：pay back的英式发音音标为：[pei bæk]pay back的美式发音音标为：[pe bæk]...

倒转...

Blackland element with fertility taller and celebrated, but come for years its fertility drops apparently.黑土素以肥力较高而著称, 但多年来其地力明显下降....

backcross的现在完成时为：backcrossed...

Jack-o的音标：...

alack的音标：alack的英式发音音标为：[ə'læk]alack的美式发音音标为：[ə'læk]...

v.露宿( bivouac的现在分词 )...

The army sent me a postcard acknowledging my request.军队寄给我一张明信片告知我的申请书已收到。It is a great relief to allow us ourselves the luxury of acknowledging our human frailties.让我们自己享受承认人类的弱点的快乐是一大慰藉.For some, even acknowledging a p...

地下水逆流，洞中洪水...

I tried not to think about it. I blacked it out.我尽量不去想它，竭力要将它忘掉。Samadov said that he felt so ill that he blacked out.萨马多夫说他感觉很不舒服，然后就晕了过去。Their mother was trying to hide her two blacked eyes.他们的母亲想遮住自己被打青的双眼。...

n.英国国旗...

backspace的音标：backspace的英式发音音标为：['bækspeɪs]backspace的美式发音音标为：['bækspeɪs]...

v.以棒打，胁迫（blackjack的第三人称单数形式）...

If you love life, life will love you back.热爱生活，生活也会厚爱你。We'll go to a meeting in Birmingham and come straight back.我们将去伯明翰参加会议，然后马上回来。The rescuers were beaten back by strong winds and currents.救援人员因风浪太大而被迫中断工作。...

n.营房，兵营，（临时性的）棚屋，外观简陋划一的房屋vt.向…提供营房（或棚屋），使（如军人）住在营房内，对…大嚷vi.住入营房（或棚屋），喝倒彩...

The comeback of all comebacks began in the 54 th minute.复出所有复出,开始在第54分钟.Career comebacks from disaster are both difficult and, oddly, easy.失败后东山再起既困难又容易(后面一点有些奇怪).Tennis has had a surplus of comebacks.网球球员复出的例子比比皆是....

blackjack的现在进行时为：blackjacking...

back and forth的音标：back and forth的英式发音音标为：[bæk ænd fɔ:θ]back and forth的美式发音音标为：[bæk ənd fɔrθ]...

adj.（体力劳动）艰苦繁重的，累死人的...

backpack的复数形式为：backpacks...