句构分析,一个连词可以引导两个句子吗? It is understood that the new bombs are more powerful than the old and that,while one atomic bomb could obliterate Hiroshima,one hydrogen bomb could obliterate the largest cities such as London,New York,and Moscow 这里 one hydrogen 前面怎么用了逗号?
It is understood that the new bombs are more powerful than the old and it is understood that while one atomic bomb could obliterate Hiroshima, one hydrogen bomb could obliterate the largest cities such as London, New York, and Moscow. 这样看结构可能会清楚点