<废>sit的过去分词
The baby - sitter can board in during Christmas.
圣诞节期间可为孩子的保姆提供膳食.
She hired on as a baby sitter.
她当了临时照看孩子的保姆.
The hotel manager will arrange for a baby-sitter.
宾馆经理会安排人照看婴儿。