动词短语
中文翻译：处于溶液中
同义词：
['be in solution', 'be dissolved in solution']
例句：
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1. Thechemical is in solution and needs to be heated before it can be used.
这种化学物质处于溶液中，需要加热后才能使用。
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2. The medicine was dissolved in water before being given to the patient.
这种药物被溶解在水中后才给病人服用。
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3.The salt is in solution and can be used as a preservative.
这种盐处于溶液中，可以用作防腐剂。