n. previa
adj. prepositive
misc. praevia
端单元，前置的楼房只有一个附墙。
End unit, front facing town home has only one attached wall.
没有显式的负数模式时，假设正数模式中包含前置的负号。
When there's no explicit negative pattern, a leading minus sign is assumed in combination with the positive pattern.
疑问句宾语虽遵循前置的规则，但已出现了后置的趋势；
The Objects in questioning sentences obey the rule of Fronting , but will be fronted.
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