But penicillin resistance is growing, isn't it?
但青霉素抗性还会继续发展,不是吗?
单词 | Penicillin Resistances |
例句 |
原声例句
6 Minute English 六分钟英语 But penicillin resistance is growing, isn't it? 但青霉素抗性还会继续发展,不是吗? |
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