您要查找的是不是：
- maximum permissible contamination level 最高容许沾染水平
- Delay is not permissible, even for a single day. 不得延误，即使一日亦不可。
- Under the new regulations this is permissible. 根据新的规章制度，这是可以的。
- permissible contamination 容许污染
- These pledges are necessary as well as permissible. 这些保证，是必需的和许可的。
- Smoking is not permissible in school. 学校里面不允许抽烟。
- Contamination can't be ruled out entirely. 污染是不能完全清除的。
- Is smoking permissible in the theatre? 在剧院里允许吸烟吗?
- The brass surface must be free of contamination. 黄铜表面必须未经沾污。
- Such contamination has been extensively studied. 人们对这种污染进行了大量研究。
- Such moving away is both permissible and necessary. 这样的走是许可的，是必须的。
- Moral contamination or corruption. 腐蚀精神上被腐化或堕落
- The contamination should be removed. 应该清除掉污染。
- An abnormal fear of dirt or contamination. 不洁恐怖对污物或污染的异常恐惧
- It was then permissible and necessary. 那时的情况容许我们如此，也应该如此。
- No product contamination absolute tightness. 没有产品污染的绝对气密性。
- There are times when joking is not permissible. 有些场合是不允许开玩笑的。
- Loop, such a block is not permissible. 循环,这样的阻塞是不允许的。
- It was permissible to ask a question. 提一个问题是准许的。
- The other part is just contamination. 其他部分只是污染之物而已。
