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
いる, 居る
1. to be (of animate objects), to exist
2. to stay
3. to be ...-ing, to have been ...-ing
存在(指有生命的事物);停留;正在……,曾经……(状态一直持续)