The killing had not been premeditated.

这次杀人不是预谋的。

We need to know whether the crime had been premeditated.

我们需要知道犯罪是否有预谋。

In a case of premeditated murder a life sentence is mandatory.

蓄意杀人依法必须判终生监禁。

In spite of his premeditated carefulness, the floor would now and then creak.

尽管他事先策划周密，但地板还是会不时吱嘎作响。

The crime was premeditated.

犯罪是预谋好的。