妈妈用沸水给婴儿奶瓶消毒。

Mother ___sterilises the baby bottles with boiling water.

宠物医院建议在猫咪六个月大时进行绝育手术。

The vet recommends ___sterilising cats when they are six months old.

过于严格的规章制度会扼杀团队的创新活力。

Excessive rules can ___sterilise a team's creative energy.