形容词
中文翻译：没有活力的
同义词：
['inactive', 'lackluster', 'lifeless']
例句：
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1.The team needs more energy to compete at the top level.
这个团队需要更多的能量才能在顶级水平上竞争。
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2.The old man seemed to have lost his zest for life.
那位老人似乎已经失去了生活的热情。
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3. The garden was overgrown with weeds, showing no signs of life.
花园被野草覆盖，毫无生机。