表结果和原因:because,since,so,as a result,therefore,then,thus,otherwise。。。。。
表空间顺序:near(to),far (from),in front of,behind,beside,beyond,above,below,to the right(left),around,on the side,outside。
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表解释说明:for example,in fact,in this case,for,actually。。。
表总结:finally,at last,in conclusion,as i have shown,in other words。
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