高速UBB标签,转换引擎性能极高，对全文只扫描一遍，且和UBB标签的种类数量无关，因此可以任意添加新的UBB标签而不必担心性能会下降,容错性非常好-- UBB label, a high performance engine conversion, only to scan the transcr ipt again, but UBB tags and the number of unrelated types, it can arbitrarily add new UBB label without worrying about performance will be lowered, fault-tolerant very good