If it has to hire a caregiver for every two children, it can't really achieve any economies of scale on labor to save money when other expenses go up.
如果它不得不为每两个孩子雇佣一名看护者，那么当其他费用上涨时，它就无法节约劳动力成本。
2
Using caregiver assessments and the children's self-observations, she rated each child's overall sympathy level and his or her tendency to feel negative emotions after moral transgressions.