1、You can imagine a bead with a wire going through it and the bead can only slideback and forth.(你可以想象一個有金屬絲穿過的珠子而且這個珠子只能前后滑動。)
2、He continued walkingback and forth, muttering to himself; he had forgotten the King entirely.(他不斷地走來走去，喃喃自語；他完全忘記了國王。)
3、The pendulum swingsback and forth.(這就像單擺一樣來回擺動。)
4、The prosecution and defence were bandying accusationsback and forth.(原告與被告你來我往，互相指責。)
5、If two flying insect populations took up residence in separate nearby valleys, chances are that individuals from each population would flyback and forth, continuing gene flow.(如果有兩個飛行昆蟲種群居住在相距不遠的不同山谷中，那么任一種群中的個體都有可能來回飛行，從而使基因流動繼續(xù)。)
6、The people swayedback and forth with arms linked.(人們手拉手前后搖擺著。)
7、She passed the needle through the rough cloth,back and forth.(她用針在那塊粗布上來來回回地穿進穿出。)
8、They continue callingback and forth until they all find each other again.(他們不停地來回打電話，直到他們再次找到彼此。)
9、From what I remember, water changesback and forth from water in lakes and oceans to vapor, and then back to water again when it falls as rain or snow, as precipitation.(根據我的記憶，水往復地變化，從湖泊和海洋里的水變成水蒸氣，然后當它以雨或雪——也就是降水的形式落下時又變成水。)
10、So energy can goback and forth.(所以能量可以來來往往。)
11、This is the same arrangement found in an old-fashioned steam radiator, in which the coiled pipes pass heatback and forth as water courses through them.(這個結構與老式蒸汽暖氣片相同，水流經散熱器時，熱量通過盤管來回輸送。)
12、Don't move those flowerpotsback and forth.(你別來回擺弄那幾盆花了。)
13、He and colleagues have shuttledback and forth between the three capitals.(他和同事們一直來回往返于3個首都之間。)
14、It'll have to make three tripsback and forth for the three trees.(那樣就需要為了這三棵樹而往返三次。)
15、A bus shuttles passengersback and forth from the station to the terminal.(一輛公共汽車在火車站和公共汽車終點站之間往返運送旅客。)
16、A winch shuttlesback and forth, and side to side, on a grid of rails above stacks of containers.(一臺絞車在集裝箱堆上方的軌道網上前后、左右穿梭。)
17、ChiChi ranback and forth in front of his chair, straining at his leash as if to run down the beach.(芝芝在他的椅子前面來來回回地跑，奮力拉扯皮帶，似乎想跑下海灘。)
18、In Taipei buildings rockedback and forth.(在臺北，建筑物前后搖晃著。)
19、A flock of sheep is walkingback and forth on the grassland.(一群羊在草原上來回走動。)
20、Rain gathered in a lotus leaf, like Yinzhu rollingback and forth in the above.(雨水聚集在荷葉上，像銀珠在上面來回滾動。)
21、A Colombian who wants someone to approach him often signals with a hand movement in which all the fingers of one hand, cupped, point downward as they move rapidlyback and forth.(一個哥倫比亞人想要別人靠近他時，他的手勢通常是一只手的所有手指都呈杯狀，指向下方，同時快速地前后移動。)
22、He pacedback and forth.(他來回踱步。)
23、Pairs of opponents hit the ballback and forth until one winner emerges from all who entered.(一群對手來回擊球，直到所有進入者中出現(xiàn)一名勝利者。)
24、The buoy floatedback and forth in the water.(浮標在水里漂來漂去。)
25、The windshield wipers clackedback and forth.(擋風玻璃上的刮雨器來回刮著，發(fā)出咔嚓聲。) hao86.com
26、The old man, still pacingback and forth, ceased to speak aloud, and began to mutter.(老人仍在來回踱步，不再大聲說話，開始喃喃自語起來。)
27、back and forth I went with the slides.(于是，我就來來回回地放著幻燈片。)
28、You know, I am still not too clear about the hydrologic cycle, the transfer of waterback and forth between the earth and the atmosphere.(你知道，我仍然不是很清楚水文循環(huán)，也就是水在地球和大氣之間的來回轉移。)
29、She rocksback and forth on her chair like a mischievous child.(她在椅子上前后晃動，像個調皮的孩子。)
30、The same fluctuationback and forth occurs in areas other than intelligence.(同樣的上下波動也發(fā)生在智力以外的領域。)
