flash back . return or revert briefly to an earlier point in the story倒叙；闪回故事中的某一主要情节
The film suddenly flashed back to the hero's youth．电影突然闪回到了男主角的青年时代。
flash forward . move briefly to a later point in a story提前叙述故事情节
The film flashed forward to the death of the soldiers．电影提前表现了战士们的牺牲。
flash in the pan . A person or thing that starts out well but does not continue 昙花一现的人物；虎头蛇尾；短暂的成功
Mary got one hundred on the first test in arithmetic but it was just a flash in the pan because she later failed several times in arithmetic．玛丽第一次算术考试得了一百分，但只是昙花一现，因为后来几次算术考试都不及格。
They won the first match，but it was only a flash in the pan，they lost all the other games．他们赢了第一场比赛，可是好景不长，后面几场比赛全输了。
He was indeed popular for a short time， but he didn't last long， just a flash in the pan．他的确红了一阵子，但好景不长，只不过是昙花一现而已。
flash out . speak in a sudden outburst of passion情绪突然激动地说话
She flashed out at Martin：“Do you really believe that no one has any idea what's going to happen？”她突然激动地对马丁说：“你真相信没有人想到要发生什么事情吗？”
She couldn't help flashing out at such a rude remark．听了这种粗鲁无礼的话，她不禁勃然大怒。
flash out . appear like a sudden bright light突然发出闪光；闪亮
The lightning flashed out from the black clouds．乌云中电光闪闪。
The lights flashed out and night became day．灯光闪烁，黑夜变得亮如白昼。
flash out . appear or flash very quickly很快地出现或闪现
With a pocket calculator，the exact answer flashes out as soon as one presses four buttons．有了袖珍计算器，按下四个按钮，准确的答案就立即出现了。
flatter oneself . feel assured；be sure of one's own talent or skill； be highly confident自信；敢说
I can flatter myself that my judgement is usually correct．我可以自信地说我的判断通常是正确的。
I flatter myself I can do it ．我自信我能做。
She flatters herself that she is a better swimmer than he is．她确信她的游泳技术比他高明。
flesh and blood . a close relative；close relatives骨肉；亲人
To my surprise，she gave me such an answer；she is my own flesh and blood．令我大吃一惊，她竟这样回答我，她还是我的亲人呢！
The girl was the old man's own flesh and blood．这女孩是老人的亲骨肉。
The people in Taiwan are our own flesh and blood．台湾人民是我们的骨肉同胞。
flesh and blood . the appearance of being real or alive真实感；活生生
The author doesn't give his characters any flesh and blood．这位作家笔下的人物没有真实感。
It was a flesh and blood performance．这是一次真实的演出。
flesh and blood . the human body血肉之躯；普通人
Before child labor laws， small children often had to work fifty to sixty hours a week in factories．It was more than flesh and blood could bear．在儿童劳工法出现之前，童工在工厂里一个星期常常要工作五十到六十小时，这不是血肉之驱所能忍受的。
It is known that there are certain things which flesh and blood cannot bear．人人都晓得，有一些事情是血肉之躯所不能忍受的。
He is flesh and blood， and has weaknesses like everyone else．他同任何人一样，也是个有血有肉的普通人，也有他的不足之处。
flesh out . fill or fatten；add to； make fuller，bigger or longer使充实；增加；加多；加大；加长
This story isn't detailed enough；it needs to be fleshed out．这个故事不够详细，还需要充实一下。
He fleshed out his argument with solid facts．他用确凿的事实来充实自己的论点。
The author fleshed out his story by adding more about his war experience．这位作家将他的战争经历更多地加进了这个故事，使故事更充实了。
flesh out . become heavier；put on weight or flesh长肥；发胖
She lost weight after her illness but is beginning to flesh out again．她病后瘦了，但现在又开始发胖了。
That pig is fleshing out well．那头猪正在迅速长膘。
fling off . leave abruptly；depart hastily突然离开；急匆匆地离开
She flung off in a fury．她怒气冲冲地跑掉了。
He flung off without saying a single word．他一声不吭气呼呼地走了。
The boy slammed the door and flung off to school．这孩子砰地一声把门关上，就往学校跑去。
fling off . produce casually； give utterance or expression to（a compliment， a tune，）casually偶然发出；漫不经心地发出（赞美的话、曲调等）
He just flung off a remark about getting a new job．他偶然谈起要找一份新的工作。
She flung off a merry tune．她随意地哼出愉快的调子。
fling off . discard；rid oneself of丢弃；摆脱；甩开（某人）
How did you manage to fling off your pursuer？你是怎样设法甩掉追你的人的？
She has decided to fling off all restraints．她已决定摆脱所有的限制。
I wish I could fling off all these petty considerations．我要是能摆脱这些杂念该多好。
fling up . give up； resign from放弃；辞去
He talked to me of flinging up the design of building a new house．他跟我谈到要放弃盖新房子的计划。
I feel like flinging it all up．我想全部都放弃。
He says he'll fling up the whole thing if they don't give him more money．他说如果他们不多给钱，他就把整个事情都辞掉。