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痩せる， 瘠せる， やせる
1. to become thin, to lose weight, to slim
2. to become impoverished (of soil), to become sterile, to become infertile, to become barren
变瘦，减肥，瘦身；贫瘠化，失去肥力，变得不孕不育，变得荒芜
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
