单词：actinic chemistry
actinic chemistry的用法和样例：
例句
- Topical retinoids have some effect in the treatment of actinic keratoses.局部应用视黄醛类药物治疗光化学性角化病有一定效果。
单词：actinic chemistry 相关文章
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释义： There is ( are ) ... 有 虽然是最基本的表达方式，但在日常会话中占到的比例很大，可以分为多个类型进行表达。 There are ( is ) ... 表示单单的在，而 Here are ( is ) ... 表示递交物品或意见。
老外最常用的英文短语
1、take a shine to sb字面意思，给某人一些阳光，中国话来说，即青睐某人，喜欢某人，更多偏向印象好，有好感的意味。 例如： I'm sure he has taken a shine to you. 我敢肯定他对你有好感。 2、have a
英语口语