il-,不，非，legitimate,合法的，婚生的。

1. They represented a ruthless and illegitimate regime that could not remain forever.

他们代表了一个残暴的非法政权，这样的政权是不可能长久的。

2. illegitimate use of company property

不正当使用公司财产

3. It is quite illegitimate to argue that the government had no choice.

辩称政府别无选择是十分不当的.

4. About 68 per cent of illegitimate births were jointly registered by both parents.

大约有68%的私生子是由父母双方共同登记的.

5. The election was dismissed as illegitimate by the opposition.

反对党以不合法为由拒绝接受选举结果。