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守る， 護る， 戍る， まもる
1. to protect, to guard, to defend
2. to keep (i.e. a promise), to abide (by the rules), to observe, to obey, to follow
保护，守护；遵守（即履行承诺）、恪守（规则）、遵守、服从、遵循
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
