〈 1．hit with a quick movement猛撞 〉
*The horse hurt its knee by running against the fence．馬撞在圍欄上，傷了膝蓋。
*Driving in a hurry he ran his car against a tree．由于開得太急，他把汽車撞到一棵樹上去了。
*While walking along the sidewalk，he was so absorbed in thought that he ran against a passerby．他走在人行道上時，全神貫注地想心事，以致和一個過路人撞了個滿懷。
2．meet accidentally 偶遇
*I ran against an old friend in the street．我在街上偶遇一位老友。
3．be unfavorable to；disfavor對…不利
*Time is now running against us in this affair．在這件事上時間于我們不利。
*Fortune seems to run against me．命運似乎與我作對。
*She never does anything that would run against the interests of the collective．她從不會做任何損害集體利益的事情。
4． compete with by running in a race ；compete with for an elected office與…賽跑；與…競選
*She is prepared to run against the world's best runners．她準備同世界上最優秀的賽跑選手比賽。
*Roosevelt ran against Hoover in 1932．1932年羅斯福同胡佛競選美國總統。
〈 1．meet by chance 偶然碰見；巧遇；碰上 〉
*I unexpectedly ran into him on the street yesterday evening．昨天晚上我在街上偶然碰見了他。
*Their ship ran into a strong gale at sea．他們那條船在海上遇到了大風。
2．collide with與…碰撞
*Suddenly he lost control of his bike and ran into a lamppost．他突然控制不住自己的自行車，一下子撞到了電線桿上。
*He ran into the back of a bus．他撞上了一輛公共汽車的尾部。
3．be affected by ；get into；encounter遭遇到；陷入；經歷You will certainly run into many difficulties，but you must not give up．你一定會遇到很多困難，但不能放棄。
*When I ran into a problem while making my model airplane， I asked my father for help．當我在做飛機模型遇到困難時，我請我父親幫忙。
*He has run into trouble in his job．他在工作中遇到了困難。
*If you travel alone in that forest，you may run into danger．如果你獨個兒在那片森林裡行走，你會遇到危險的。
*She has run heavily into debt．她負債累累。
4．add up to；amount to；total總計為；累計達到
*The new dictionary has run into several editions．那部新詞典已經再版好幾次了。
*The number of people killed on the highways during holidays runs into hundreds．高速公路上傷亡人數在假期裡高達數百人。
*Losses ran into millions of U．S．dollars．損失達幾百萬美元。
5．mix with；join with 與…混合 ；與…相會合
*The rivers on the other side of the mountains run into the Atlantic．山另一側的河流都流入了大西洋。
*The small brook runs into a big river in the valley below．這條小溪在下邊的山谷裡流入一條大河。
6．continue into延續到；接連；跟著
*One year ran into the next，and still there was no change．年復一年，依然如故。
〈 1． meet by chance ；encounter碰到；偶遇 〉
*I thought we would be successful，but we ran up against a lack of money．我本以為我們會成功，但因資金短缺而受阻。
*Could you help me？I've run up against a few problems．你能幫我 一下嗎？我碰上了幾個問題。
2．collide with與…相撞
*In the dark he ran up against a big tree．黑暗中，他撞到一棵大樹上去了。
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