第1个回答 2012-01-10
In theory, we should obey the traffic rules
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第2个回答 2012-01-10
Theoretically / In theory,everyone should obey the traffic rules.
或者说:None should go against with traffic rules.
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第3个回答 2012-01-10
Theoretically we should obey the traffic regulations.
第4个回答 2012-01-10
In theory,all of us should obey the traffic rules.