I had my cat neutered / fixed last week.
(我上禮拜帶我的(公)貓去結紮了。)
The cat is neutered / fixed.
(這隻(公)貓結紮過了。)
This dog has to be spayed / fixed.
(這隻(母)狗必須結紮。)
He had a vasectomy when he was 40.
= He got snipped when he was 40.
(他40歲時做了結紮手術。)
She got her tubes tied after having four children.
(她在生了四個小孩後去做了結紮手術。)