原因在于，当碳被标价时，那些实行的减排措施中成本最低的将会先实施。
The reason is that when carbon is priced, those emissions reductions that are least costly to implement will happen first.
英格兰的这一禁令不会在英国的其他地方如苏格兰实行。在苏格兰，一条类似的法令因被起诉而暂停实施。
England's ban doesn't apply to other regions in the U.K. such as Scotland, where the implementation of a similar law has been held up by litigation.
短语和近似搜索现在并未实行，但实施并不困难。
Phrase and proximity searches are not currently performed, but they would not be difficult to implement.
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