单词：cation exchange site
cation exchange site的用法和样例：
例句
- I should like to exchange a few words with you in confidence.我想私下和你交换点意见。
- Including the establishment of clean needles exchange points, to open out-patient methadone maintenance therapy, achieving remarkable results.包括设立清洁针具交换点，开设美沙酮维持治疗门诊等，取得明显效果。
单词：cation exchange site 相关文章
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英语口语