I think using unless with else is like speaking with double negatives.
我认为使用unless加else条件句就好像在讲双重否定。
The poor grammar, unconventional double negatives and monotonous sentential patterns form the typical features of Gumps language.
蹩脚的语法，非常规的双重否定和结构单一的表达构成了他句法层面的显著特色。
As you iterate over the query expressions, your algorithm may need to correct for double negatives. Consider a query expression like this one.
在遍历查询表达式时，算法可能需要纠正双重否定。
The initiatives became longer-the longest rambled on for 15, 633 words-and, with double negatives and impenetrable legalese, less comprehensible.
选民倡议越来越长，最长的有15633个字，包含双重否定和看不懂的法律术语，越来越难以理解。
Even though the use of double negatives in formal speech and writing is nonstandard, the use of double negatives is common in areas such as informal speech and popular music.
即使在正式演讲和写作中使用双重否定是不标准的，在非正式的演讲和流行音乐等领域双重否定的使用是很常见的。
The language is dense legalese, often containing double or triple negatives.
当中法律措辞太多，还经常含有双重否定或三重否定。
There are two reasons for negatives in measuring double-frequency induced polarization, one is electromagnetic coupling effect, the other is geo-boby existing in an impersonal way.
引起双频激电仪野外测量出现负值的原因主要有两类：一类是由于电磁耦合效应；另一类是由于地下地质体的影响。
There are two reasons for negatives in measuring double-frequency induced polarization, one is electromagnetic coupling effect, the other is geo-boby existing in an impersonal way.
引起双频激电仪野外测量出现负值的原因主要有两类：一类是由于电磁耦合效应；另一类是由于地下地质体的影响。
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