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- P is true just in case the negation of p is not true. 只限於P的否定为不真时P才是真的。
- P is aspirated in pin but not in spin. pin. 中的p要送气发音,但spin中的p不送气发音。
- It is not easy to get a foothold as an anchorman. 一个电视节目主持人要站住脚可不容易。
- That is not, properly speaking, a dictionary, but a grammar. 严格说来; 那不是一本词典,而是一本语法书。
- The animal is not used to the hotness of its new habitat yet. 这个动物还不习惯新栖息地的炎热。
- English is not the usual medium of instruction in our school. 英语不是我校通常使用的教学语言。
- His recollection of the campaign is not too clear. 他对竞选的记忆不是那么清楚。
- It is not always reliable to argue by analogy. 用类推法论证并不总是可靠的。
- The light now shining on P is called incident ray. 射到P点的光叫做入射光线。
- Please let him alone; he is not in his right mind. 请不要打扰地,他精神不正常。
- The violin is not quite in tune with the piano. 这小提琴跟钢琴的调子不太和谐。
- It is not easy to make a simile go on all fours. 一个比喻要完全贴切是不容易的。
- An empty stomach is not a good political adviser. 空肚子不是政治上的好顾问。
- The chief aim of man is not to get money. 人的主要目的并不是赚钱。
- The little girl is not very clever at addition. 这个小女孩不太善于做加法。
- He is not made for climbing the tree of knowledge. 他不是生来适于攀登知识之树的。
- That explains why she is not here. 那就说明了她不在这里的原因。
- The squadron is not yet operational. 飞行中队尚未能马上行动。
- It is not easy to dig out the past. 发掘过去的历史是不容易的。
- This pair of scales is not in equilibrium. 这个天平不平衡。