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下降的声音
1、fell sleep───入睡，睡着
2、sound───n.声音；噪音；音响；海峡；听力范围；医用探子；无线电广播；音响效果；adj.合理的；无损的；有能力的；充足的；彻底的；熟睡的；资金充实的；（非正式）非常棒的；严厉的；健全的；adv.彻底地，酣畅地；v.（使）发声；听起来；鸣警报；听（诊）；回响；探测；试探；宣告；（医）用探子检查；（尤指鲸鱼）潜入深海
3、how fell───怎么掉下来的
4、fell───v.掉下，跌落（fall的过去式）；砍伐；击倒，打倒；把（接缝的边）缝平；adj.XieE的，凶猛的；毁灭性的，致命的；n.小山，丘陵地区；一季所伐的木材；兽皮；折缝；n.(Fell)（美、英、德、法）费尔（人名）
5、fell out───争吵，发生；v.争吵
6、fell into a sound sleep───睡着了
7、fell afraid───感到害怕
8、era fell───时代倒下了
9、fell soft───软弱无力
1、Then I gave it up and fell sound asleep myself───后来我放弃了努力，自己也睡熟了。
2、At last, towards night, she utterly exhausted. I persuaded her to go to sleep and she fell sound asleep at once.───到深夜的时候，她终于完全没有力气了，我劝她睡觉，她马上就睡着了，而且睡得很沉。
3、Two guys, Joe and Bill, went camping in the desert. After they got their tent all set up, they fell sound asleep.───两个男人，乔和比尔，去沙漠里野营。他们支好帐篷之后，就开始睡觉了。
4、Though the coal fire gave out very strong sulphuric odour, it did not bother Khruschev at all and he soon fell sound asleep.───尽管煤的硫磺气味很浓，赫鲁晓夫还是毫不在意地早早入睡了。
5、The one I had, who had been like a bounding leopard all evening, fell sound asleep as I was climbing over her.───我的那个姑娘整个晚上都像一头豹子一样蹦蹦跳跳，我爬到她身上时她已睡熟了。
6、I fell sound asleep last night and didn't hear you come in .───我昨晚睡得死沉，没听见你们进来。
1、He and your dad fell sound asleep in the same bed while I read aloud to them.
2、Then I fell sound asleep again.
3、He was very tired and therefore he fell sound asleep.