您要查找的是不是：
- Mnemonics are not optional. 访问键不是可有可无的，而是必须要有的。
- However, the mnemonics are not necessary for a complete automated analysis. 不过，对于一个完全自动化分析来说，助记码不是必需的。
- Modern paintings are not to my taste. 现代画不合我的口味。
- Parameters which are not required, are optional. 参数不是必需的，是可选的。
- Flashes are not allowed to be used in this museum. 这个博物馆里不准使用闪光灯。
- Learned men are not necessarily wise. 博学者未必都是聪明的。
- His inmost thoughts are not healthy. 他心灵深处的思想是不健康的。
- Cars are not allowed to go through the city centre. 禁止汽车从市中心穿行。
- Old people are not acceptive of new ideas. 老年人不容易接受新的观念。
- These discoveries are not worth the candle. 这些发现毫无价值。
- Administrators are not affected by this option. 管理员不受此选项的影响。
- Some people are not doing their whack. 有的人没有尽力。
- Many old rules are not in force any more. 许多旧的制度都已经失效。
- Sale goods in this shop are not exchangeable. 本店货物售出概不退换。
- Conditions here are not what she's accustomed to. 这里的条件不是她所习惯享受的。
- Their promises are not worth a damn. 他们的承诺分文不值。
- These computers are not yet on the market. 这些计算机还未上市。
- These problems are not readily soluble. 这些问题不容易解决。
- Cheer up! Things are not so bad as they seem. 振作起来！情况并不象看上去那样糟。
- Lions are carnivores; rabbits are not. 狮子是食肉动物，兔子不是。
