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向かい合う， 向かいあう， 向い合う， むかいあう
1. to be opposite, to face each other
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立つ， たつ
1. to stand (up), to rise, to get to one's feet, to stand on end (e.g. of hairs), to stick up
2. to stand (in a position; of a person, tree, building, etc.), to be situated (in, on)
3. to be (in difficulties, the lead, etc.), to put oneself (in a pos...
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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
