名词
中文翻译：约束
同义词：
['restrictions', 'limitations', 'restrictions']
例句：
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1. The government has imposed several constraints on the citizens' freedom of speech.
政府对公民的言论自由施加了若干限制。
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2. The company is facing numerous constraints in its operations due to the economic downturn.
由于经济衰退，该公司在运营上面临诸多限制。
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3. The project is constrained by budgetary and time constraints.
该项目受到预算和时间的限制。