她的性情好。

She has a good disposition.

《新英汉大辞典》

而在自由状态下的大猩猩，即使在兴奋的时候也比较庄严，多数都十分有威严，性情好。

In his freedom he is majestic even when excited and, for the most part, dignified and good natured.

youdao

乔并不乐意，但她找不到更好的差事，便答应下来。出人意料的是，她跟这位性情暴躁的亲戚相处得非常好。

This did not suit Jo at all, but she accepted the place since nothing better appeared and, to every one's surprise, got on remarkably well with her irascible relative.

youdao