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VERB
（無意地）碰撞，沖撞
If you bump into something or someone, you accidentally hit them while you are moving.
例句
They stopped walking and he almost bumped into them...
他們停下了腳步，結果他差點兒撞到他們身上。
There was a jerk as the boat bumped against something...
船撞到什么東西，猛顛了一下。
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N-COUNT
碰撞；碰撞聲
A bump is the action or the dull sound of two heavy objects hitting each other.
例句
I felt a little bump and I knew instantly what had happened...
我感覺到一點兒輕微的碰撞，便立刻意識到發生了什么。
The child took five steps, and then sat down with a bump.
小孩走了5步，接著撲通一聲坐到了地上。
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N-COUNT
（碰撞造成的）腫塊，鼓包
A bump is a minor injury or swelling that you get if you bump into something or if something hits you.
例句
She fell against our coffee table and got a large bump on her forehead.
她倒地時撞到我們的咖啡桌上，額頭起了個大包。
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N-COUNT
（車輛的）輕微碰撞
If you have a bump while you are driving a car, you have a minor accident in which you hit something.
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N-COUNT
（地面的）隆起，凸塊
A bump on a road is a raised, uneven part.
例句
The truck hit a bump and bounced.
卡車開過路面上的隆起處，顛了一下。
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VERB
顛簸而行
If a vehicle bumps over a surface, it travels in a rough, bouncing way because the surface is very uneven.
例句
We left the road, and again bumped over the mountainside...
我們駛離公路，再次在山腰上顛簸前行。
The aircraft bumped along erratically without gathering anything like sufficient speed.
飛機忽上忽下，飛行很不平穩，根本未達到應有的速度。
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PHRASE
猛然回到現實中來
If someone comes down to earth with a bump, they suddenly start recognizing unpleasant facts after a period of time when they have not been doing this.
例句
Company bosses have come back down to earth with a bump after a period of post-election euphoria.
公司老板們在經歷了一段選舉過后的興奮之后，重又回到現實中來。