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ADV
向后；朝后
If you move or look backwards, you move or look in the direction that your back is facing.
例句
The diver flipped over backwards into the water...
潛水員向后翻身入水。
He took two steps backward...
他后退了兩步。
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ADV
倒轉地；逆向地；相反地
If you do something backwards, you do it in the opposite way to the usual way.
例句
He works backwards, building a house from the top downwards.
他把工序倒過來了，從上往下建房子。
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ADV
倒退地；后退地；退步地
You use backwards to indicate that something changes or develops in a way that is not an improvement, but is a return to old ideas or methods.
例句
Greater government intervention in businesses would represent a step backwards.
政府加強對企業的干涉將是一種倒退。
...the blaming that keeps us looking backward.
迫使我們時時后顧的責難
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PHRASE
來來回回；往復
If someone or something moves backwards and forwards, they move repeatedly first in one direction and then in the opposite direction.
例句
Draw the floss backwards and forwards between the teeth.
將牙線在齒間來回拉動。
...people travelling backwards and forwards to and from London.
往返于倫敦的人
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PHRASE
熟知，對…了如指掌（美國英語中作know something backward and forward）
In British English, if you say that someone knows something backwards, you are emphasizing that they know it very well. In American English, you say that someone knows something backward and forward .
例句
I asked about one or two things that interest me and she really did know it all backwards.
我問了一兩樣我感興趣的東西，她的確都了如指掌。