动词短语
中文翻译：在某方面薄弱
同义词：
['weak in', 'frail in']
例句：
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1.The team was weak in defense, allowing the opponent to score easily.
球队在防守上很薄弱，让对手轻松得分。
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2.She is frail in health, barely able to walk without assistance.
她的健康状况很脆弱，几乎无法独立行走。
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3. The company's financial performance has been weak in recent years.
这家公司近年来的财务状况一直较弱。