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その， そん， 其の
1. that, the
2. part (as in "part two")
3. um ..., er ..., uh ...
那个；部分（如“第二部分”）
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効力， こうりょく
1. effect, efficacy, validity, potency
效力，有效性
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なくなる， 無くなる
1. to be lost (e.g. luggage), to be missing
2. to be used up, to be run out, to be exhausted, to be consumed, to be reduced to zero, to not occur any more
3. to disappear (e.g. pain), to be lost (e.g. a dream, confidence)
丢失（如行李），失踪；用完，耗尽；消失，迷失
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
