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によって， に因って， に依って
1. according to, by (means of), due to, because of
根据；用……(方法)；因为
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変わる， 変る， かわる
1. to change, to be transformed, to be altered, to vary
2. to move to
3. to be different, to be uncommon, to be unusual
改变，变化
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
