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ので， んで
1. that being the case, because of ..., the reason is ..., given that ...
鉴于这种情况：用于引出一个逻辑推理或结论，表示基于前面所述的情况或条件，因此可以得出这样的结论；由于……，所以，原因在于……，鉴于……
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混む， こむ
1. to be crowded, to be packed, to be congested, to be thronged (with)
tbd
は
1. indicates sentence topic
2. indicates contrast with another option (stated or unstated)
3. adds emphasis
指示句子的主题；表示与另一选项（无论是否明确提及）形成对比；表示强调
