1. 他們投機購買谷物是不合法的。
   Their speculative buying of grain is illegal.
2. 指望我白天黑夜都工作是不合情理的。
   It's unreasonable to expect me to work all day and all night.
3. 殘忍完全不合他的本性。
   Cruelty is quite alien to his nature.
4. 不跟你父親打個招呼就走是非常不合適的。
   To go away without telling your father is most irregular.
5. 未經允許看別人的私人信件是不合法的。
   It's illegal to read people's private letters without permission.

不的英語翻譯：

合的英語翻譯：